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{ or }. (Med.) Same as Aden ulcer. [ Webster 1913 Suppl. + AS ]

n. a boy who assists a priest at the clebration of the Holy Mass and other forms of public worship; -- also called acolyte. [ PJC ]

n. a bomb of great power in which the explosive energy is derived from the nuclear fission of a fissionable material, such as plutonium or uranium-235. It is a type of nuclear weapon. The strength of an atom bomb is measured in kilotons, i.e. the equivalent energy released by explosion of a thousand tons of TNT. The first atomic bomb was manufactured in 1945.
Syn. -- A-bomb, fission bomb. [ PJC ]

1. A bushing in the hub of a wheel, through which the axle passes. [ 1913 Webster ]

2. The journal box of a rotating axle, especially a railway axle. [ 1913 Webster ]

☞ In railway construction, the axle guard, or pedestal, with the superincumbent weight, rests on the top of the box (usually with a spring intervening), and holds it in place by flanges. The box rests upon the journal bearing and key, which intervene between the inner top of the box and the axle. [ 1913 Webster ]

(Law) (a) A bond or obligation given by a prisoner and his surety, to insure the prisoner's appearance in court, at the return of the writ. (b) Special bail in court to abide the judgment. Bouvier. [ 1913 Webster ]

A book kept by a depositor, in which an officer of a bank enters the debits and credits of the depositor's account with the bank. [ 1913 Webster ]

n. the absolute minimum necessary. [ PJC ]

prop. n. (Finance) The New York Stock Exchange; -- a nickname often used in financial reporting. [ PJC ]

(Com.) A book in which a person keeps an account of his notes, bills, bills of exchange, etc., thus showing all that he issues and receives. [ 1913 Webster ]

{ }. [ Named after the town Biskara, in Algeria. ] (Med.) Same as Aleppo boil. [ Webster 1913 Suppl. ]

1. One of several books of a political character, published at different times and for different purposes; -- so called either from the color of the binding, or from the character of the contents. [ 1913 Webster ]

2. A book compiled in the twelfth century, containing a description of the court of exchequer of England, an official statement of the revenues of the crown, etc. [ 1913 Webster ]

3. A book containing details of the enormities practiced in the English monasteries and religious houses, compiled by order of their visitors under Henry VIII., to hasten their dissolution. [ 1913 Webster ]

4. A book of admiralty law, of the highest authority, compiled in the reign of Edw. III. Bouvier. Wharton. [ 1913 Webster ]

5. A book kept for the purpose of registering the names of persons liable to censure or punishment, as in the English universities, or the English armies. [ 1913 Webster ]

6. Any book which treats of necromancy. [ 1913 Webster ]

7. A book containing a black list. [ PJC ]

8. A book kept by a single man, containing a list of women whom he calls occasionally for a social date; -- usually used in the phrase little black book. [ jocose ] [ PJC ]

n. 1. any electronic instrument or part of an instrument whose function is defined, but which is treated as a unit without consideration of the internal mechanisms; broadly, any device whose internal workings are considered as incomprehensible or mysterious by the user; as, to treat the meter as a black box and take its readings on faith. [ PJC ]

2. (aviation) a device which maintains a record of cockpit conversations and the readings of many of the instruments on board an aircraft, continuously or at frequent time intervals during a flight. It is of rugged design to withstand a violent crash, and is used to determine the causes of aircraft accidents. They are often brightly colored to assist recovery, not actually black. [ PJC ]

A book printed from engraved wooden blocks instead of movable types. [ 1913 Webster ]

{ or } n. 1. A broad, flat Scottish cap of blue woolen, or one wearing such cap; a Scotchman. [ 1913 Webster ]

2. (Bot.) A plant. Same as Bluebottle. [ 1913 Webster ]

3. (Zool.) The European blue titmouse (Parus cœruleus); the bluecap. [ 1913 Webster ]

1. A parliamentary publication, so called from its blue paper covers. [ Eng. ] [ 1913 Webster ]

2. The United States official “Biennial Register.” [ 1913 Webster ]

{ ‖ ‖, n. [ Skr. bōdhisattva (perh. through Pali bōdhisattō); fr. bōdhi knowledge, enlightenment + sattva being, essence. ] (Buddhism) One who has reached the highest degree of saintship, so that in his next incarnation he will be a Buddha, or savior of the world. -- Bo"dhi*sat`ship, n. [Webster 1913 Suppl.]

{ } n. [ Cf. Bombazine. ] A sort of thin woolen cloth. It is of various colors, and may be plain or twilled. [ 1913 Webster ]

‖ pl. Bonnes bouches [ F. bon, fem. bonne, good + bouche mouth. ] A delicious morsel or mouthful; a tidbit. [ 1913 Webster ]

n. a large portable casette or compact disk player, usually having an integrated radio receiver. It typically has two (stereophonic) speakers, and can be adjusted to play at a high sound intensity, from which the name comes.
Syn. -- ghetto blaster. [ WordNet 1.5 ]

(Anat.) See Canon Bone. [ 1913 Webster ]

[ F. canon, fr. L. canon a rule. See canon. ] (Anat.) The shank bone, or great bone above the fetlock, in the fore and hind legs of the horse and allied animals, corresponding to the middle metacarpal or metatarsal bone of most mammals. See Horse. [ 1913 Webster ]

n. a type of bolt threaded only at the end opposite the head, used mostly for fastening pieces of timber together, and inserted into pre-drilled holes. [ PJC ]

(Anat.) The clavicle, a bone linking the scapula and sternum. [ 1913 Webster + WordNet 1.5 ]

. The small pastern bone of the horse and allied animals. [ Webster 1913 Suppl. ]

n. a thin layer of geologic deposits, of varying thickness in different parts of the world, found between the geological strata identified as Cretaceous and the strata above, identified as Tertiary; also, the time point or period marking the boundary between the Cretaceous and Tertiary periods.
Syn. -- K/T boundary. [ PJC ]

☞According to a theory gaining acceptance (as of 1997), these deposits were formed as the debris of a large comet or meteorite impact on the earth, which threw up a large quantity of dust into the atmosphere, causing profound though temporary climatic change, and caused or hastened the extinction of numerous species, including the dinosaurs. This hypothesis was first postulated by Luis and Walter Alvarez on the basis of an excess of iridium found in the boundary layer, and was later supported by additional evidence of various types. The impact is believed to have occurred at the edge of the Yucatan peninsula in Mexico, forming what is termed the Chicxulub crater, which is partly under the Gulf of Mexico, is not evident from surface topography, and was detected primarily by gravity anomaly readings and subsurface geological characteristics. [ PJC ]

‖ [ L. ] Lit., for whose benefit; incorrectly understood, it came to be used in the sense, of what good or use; and hence, (what) purpose; object; specif., the ultimate object of life. [ Webster 1913 Suppl. ]

‖ [ F. ] In decorative art, boiled leather, fitted by the process to receive impressed patterns, like those produced by chasing metal, and to retain the impression permanently. [ Webster 1913 Suppl. ]

The shell or bone of cuttlefishes, used for various purposes, as for making polishing powder, etc. [ 1913 Webster ]

n. a circular board of wood or cork used as the target in the game of darts. It may have any of several patterns on it, such as concentric circles, or a central circle with rays. [ WordNet 1.5 +PJC ]

n. a schoolchild at a boarding school who has meals at school but sleeps at home. [ WordNet 1.5 ]

See Dredging box. [ 1913 Webster ]

. A variety of water-tube boiler, used chiefly in steam automobiles, consisting of a nest of strong tubes with very little water space, kept nearly red hot so that the water as it trickles drop by drop into the tubes is immediately flashed into steam and superheated. [ Webster 1913 Suppl. ]

. A compact form of hydro-aëroplane having one central body, or hull. [ Webster 1913 Suppl. ]

n. a temporary bridge for getting on and off a vessel at dockside.
Syn. -- gangplank, gang plank, gangway. [ WordNet 1.5 ]

See Jib boom. [ 1913 Webster ]

{ n., or . [ Name of a valley in Scotland. ] A kind of Highland Scotch cap for men, with straight sides and a hollow top sloping to the back, where it is parted and held together by ribbons or strings.

The long silk streamers of his Glengarry bonnet. L. Hutton. [ Webster 1913 Suppl. ]

. (Elec.) A box through which the main conductors of a system of electric distribution pass, and where connection is made with branch circuits. [ Webster 1913 Suppl. ]

pos>n. (Bot.) A climbing plant with fragrant blossoms (Clematis vitalba). [ 1913 Webster ]

☞ This term is sometimes applied to other plants of the same genus. [ 1913 Webster ]

pos>n. A steam boiler having two flues which contain the furnaces and extend through the boiler from end to end. [ 1913 Webster ]

n. A bomb disguised as a letter and sent through the mail, usually rigged to explode and kill or harm the recipient when opened. [ WordNet 1.5 ]

‖pos>n. [ NL. Linnaeus Linnæan + L. borealis northern. ] (Bot.) The twin flower which grows in cold northern climates. [ 1913 Webster ]

n. A threaded hexagonal or square-headed bolt with a nut; it is tightened with a wrench and used to connect metal parts. [ WordNet 1.5 ]

. A flat-bottomed boat with a pointed prow and square stern, using oars or sails or both, used esp. on the upper Great Lakes and their tributaries. [ Webster 1913 Suppl. ]

n. (Physics) Any configuration of magnetic fields used to contain a plasma during controlled thermonuclear reactions. [ WordNet 1.5 ]

n. 1. a boat that carries the mail.
Syn. -- mail boat, packet, packet boat. [ WordNet 1.5 ]

n. Same as malar, n. [ PJC ]

n. The body of an adult human male; -- a term used especially in art; as, Da Vinci was unexcelled in painting the male body.
Syn. -- adult male body, man's body. [ PJC ]

n. (Anatomy), The capsule that contains a glomerulus at the expanded end of a nephron; also called malpighian corpuscle and Malpighian capsule. [ WordNet 1.5 ]