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n. [ Boron + fluoride. ] (Chem.) A double fluoride of boron and hydrogen, or some other positive element, or radical; -- called also fluoboride, and formerly fluoborate. [ 1913 Webster ]

n. [ Boron + glyceride. ] (Chem.) A compound of boric acid and glycerin, used as an antiseptic. [ 1913 Webster ]

n. [ See Borax. ] (Chem.) A nonmetallic element occurring abundantly in borax. It is reduced with difficulty to the free state, when it can be obtained in several different forms; viz., as a substance of a deep olive color, in a semimetallic form, and in colorless quadratic crystals similar to the diamond in hardness and other properties. It occurs in nature also in boracite, datolite, tourmaline, and some other minerals. Atomic number 5. Atomic weight 10.81. Symbol B. [ 1913 Webster ]

adj. of or pertaining to boron. [ WordNet 1.5 ]

n. [ Boron + silicate. ] (Chem.) A double salt of boric and silicic acids, as in the natural minerals tourmaline, datolite, etc. [ 1913 Webster ]

n. [ OE. burgh, burw, boru, port, town, burrow, AS. burh, burg; akin to Icel., Sw., & Dan. borg, OS. & D. burg, OHG. puruc, purc, MHG. burc, G. burg, Goth. baúrgs; and from the root of AS. beorgan to hide, save, defend, G. bergen; or perh. from that of AS. beorg hill, mountain. √95. See Bury, v. t., and cf. Burrow, Burg, Bury, n., Burgess, Iceberg, Borrow, Harbor, Hauberk. ] 1. In England, an incorporated town that is not a city; also, a town that sends members to parliament; in Scotland, a body corporate, consisting of the inhabitants of a certain district, erected by the sovereign, with a certain jurisdiction; in America, an incorporated town or village, as in Pennsylvania and Connecticut. Burrill. Erskine. [ 1913 Webster ]

2. The collective body of citizens or inhabitants of a borough; as, the borough voted to lay a tax. [ 1913 Webster ]

Close borough, or
Pocket borough, a borough having the right of sending a member to Parliament, whose nomination is in the hands of a single person. --
Rotten borough, a name given to any borough which, at the time of the passage of the Reform Bill of 1832, contained but few voters, yet retained the privilege of sending a member to Parliament. [ 1913 Webster ]

n. [ See Borrow. ] (O. Eng. Law) (a) An association of men who gave pledges or sureties to the king for the good behavior of each other. (b) The pledge or surety thus given. Blackstone. Tomlins. [ 1913 Webster ]

n. (Eng. Law) A custom, as in some ancient boroughs, by which lands and tenements descend to the youngest son, instead of the eldest; or, if the owner have no issue, to the youngest brother. Blackstone. [ 1913 Webster ]

n. See Headborough. [ Obs. ] [ 1913 Webster ]

n. A headborough; a borsholder. [ 1913 Webster ]

n. [ Cf. Burgomaster. ] The mayor, governor, or bailiff of a borough. [ 1913 Webster ]

n. One who buys or sells the parliamentary seats of boroughs. [ 1913 Webster ]

{ } n. The practices of a boroughmonger. [ 1913 Webster ]

{ } n. [ G., fr. Skr. ēka one + G. bor, boron, E. boron. ] (Chem.) The name given by Mendelejeff in accordance with the periodic law, and by prediction, to a hypothetical element then unknown, but since discovered and named scandium; -- so called because it was a missing analogue of the boron group. See Scandium. [ 1913 Webster ]

A woman's broad-brimmed hat of a form thought to resemble those shown in portraits by Thomas Gainsborough, the English artist (1727-88). [ Webster 1913 Suppl. ]

a. Hospitable. [ Obs. ] [ 1913 Webster ]

{ } n. [ See Harbor. ] A shelter. [ Obs. ]. Spenser. [ 1913 Webster ]

{ } n. 1. The chief of a frankpledge, tithing, or decennary, consisting of ten families; -- called also borsholder, boroughhead, boroughholder, and sometimes tithingman. See Borsholder. [ Eng. ] Blackstone. [ 1913 Webster ]

2. (Modern Law) A petty constable. [ Eng. ] [ 1913 Webster ]

n. [ See Harborough, and Harbor. ] A harbor. [ Obs. ] B. Jonson.

a. Laborious. [ Obs. ] Wyatt. -- La"bor*ous*ly, adv. [Obs.] Sir T. Elyot. [1913 Webster]