capn.[OE. cappe, AS. cppe, cap, cape, hood, fr. LL, cappa, capa; perhaps of Iberian origin, as Isidorus of Seville mentions it first: Capa, quia quasi totum capiat hominem; it. capitis ornamentum. See 3d Cape, and cf. 1st Cope.]1. A covering for the head()2. The top, or uppermost part; the chief.()Thou art the cap of all the fools alive. (Shak.)3. A respectful uncovering of the head.()He that will give a cap and make a leg in thanks. (Fuller.)4. (Zol.) The whole top of the head of a bird from the base of the bill to the nape of the neck.()5. (Arch.) Anything resembling a cap in form, position, or use()6. A large size of writing paper; as, flat cap; foolscap; legal cap.()Cap of a cannon, a piece of lead laid over the vent to keep the priming dry; -- now called an apron. -- Cap in hand, obsequiously; submissively. -- Cap of liberty. See Liberty cap, under Liberty. -- Cap of maintenance, a cap of state carried before the kings of England at the coronation. It is also carried before the mayors of some cities. -- Cap money, money collected in a cap for the huntsman at the death of the fox. -- Cap paper. (a) A kind of writing paper including flat cap, foolscap, and legal cap. (b) A coarse wrapping paper used for making caps to hold commodities. -- Cap rock (Mining), The layer of rock next overlying ore, generally of barren vein material. -- Flat cap, cap See Foolscap. -- Forage cap, the cloth undress head covering of an officer of soldier. -- Legal cap, a kind of folio writing paper, made for the use of lawyers, in long narrow sheets which have the fold at the top or narrow edge. -- To set one's cap, to make a fool of one. (Obs.) Chaucer. -- To set one's cap for, to try to win the favor of a man with a view to marriage. [Colloq.]()()v. t.1. To cover with a cap, or as with a cap; to provide with a cap or cover; to cover the top or end of; to place a cap upon the proper part of; as, to cap a post; to cap a gun.()The bones next the joint are capped with a smooth cartilaginous substance. (Derham.)2. To deprive of cap.(Spenser.)3. To complete; to crown; to bring to the highest point or consummation; as, to cap the climax of absurdity.()4. To salute by removing the cap.()Tom . . . capped the proctor with the profoundest of bows. (Thackeray.)5. To match; to mate in contest; to furnish a complement to; as, to cap text; to cap proverbs.(Shak.)Now I have him under girdle I'll cap verses with him to the end of the chapter. (Dryden.)()v. i. To uncover the head respectfully.(Shak.)