v. i. [ Cf. OD. labben to babble. ] To prate; to gossip; to babble; to blab. [ Obs. ] Chaucer. [ 1913 Webster ]

a. Of or pertaining to a laboratory; as, a lab bench. [ Colloq. ] [ PJC ]

n. 1. A telltale; a prater; a blabber. [ Obs. ] “I am no lab.” Chaucer. [ 1913 Webster ]

2. [ By truncation of laboratory. ] Laboratory. [ Colloq. ] [ PJC ]

n. (Eccl. Hist.) A follower of Jean de Labadie, a religious teacher of the 17th century, who left the Roman Catholic Church and taught a kind of mysticism, and the obligation of community of property among Christians. [ 1913 Webster ]

pos>n. [ From Labarraque, a Parisian apothecary. ] (Med.) An aqueous solution of sodium hypochlorite, extensively used as a disinfectant. [ 1913 Webster ]

Sodium hypochlorite is the same compound used in the commercial trademarked bleach Clorox(TM). It has both disinfectant and bleaching activity. [ PJC ]

‖n.; pl. Labara [ L. ] The standard adopted by the Emperor Constantine after his conversion to Christianity. It is described as a pike bearing a silk banner hanging from a crosspiece, and surmounted by a golden crown. It bore a monogram of the first two letters (ΧΡ) (which appear like the English letters X and P), of the name of Christ in its Greek form. Later, the name was given to various modifications of this standard. [ 1913 Webster ]

n. (Bot.) See Ladanum. [ 1913 Webster ]

n. [ See Labefy. ] The act of labefying or making weak; the state of being weakened; decay; ruin. [ 1913 Webster ]

There is in it such a labefaction of all principles as may be injurious to morality. Johnson. [ 1913 Webster ]

v. t. [ L. labefacere; labare to totter + facere to make. ] To weaken or impair. [ R. ] [ 1913 Webster ]

n. [ OF. label sort of ribbon or fringe, label in heraldry, F. lambeau shred, strip, rag; of uncertain origin; cf. L. labellum, dim. of labrum lip, edge, margin, G. lappen flap, patch, rag, tatter (cf. Lap of a dress), W. llab, llabed, label, flap, Gael. leab, leob, slice, shred, hanging lip. ] 1. A tassel. [ Obs. ] Huloet. Fuller. [ 1913 Webster ]

2. A slip of silk, paper, parchment, etc., affixed to anything, and indicating, usually by an inscription, the contents, ownership, destination, etc.; as, the label of a bottle or a package. [ 1913 Webster ]

3. A slip of ribbon, parchment, etc., attached to a document to hold the appended seal; also, the seal. [ 1913 Webster ]

4. A writing annexed by way of addition, as a codicil added to a will. [ 1913 Webster ]

5. (Her.) A barrulet, or, rarely, a bendlet, with pendants, or points, usually three, especially used as a mark of cadency to distinguish an eldest or only son while his father is still living. [ 1913 Webster ]

6. A brass rule with sights, formerly used, in connection with a circumferentor, to take altitudes. Knight. [ 1913 Webster ]

7. (Gothic Arch.) The name now generally given to the projecting molding by the sides, and over the tops, of openings in mediæval architecture. It always has a square form, as in the illustration. Arch. Pub. Soc. [ 1913 Webster ]

8. In mediæval art, the representation of a band or scroll containing an inscription. Fairholt. [ 1913 Webster ]