1. A covering for the head; esp. (a) One usually with a visor but without a brim, for men and boys; (b) One of lace, muslin, etc., for women, or infants; (c) One used as the mark or ensign of some rank, office, or dignity, as that of a cardinal.
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. (Zoöl.)
Defn: The whole top of the head of a bird from the base of the bill to the nape of the neck.
5. Anything resembling a cap in form, position, or use; as: (a) (Arch.) The uppermost of any assemblage of parts; as, the cap of column, door, etc.; a capital, coping, cornice, lintel, or plate. (b) Something covering the top or end of a thing for protection or ornament. (c) (Naut.) A collar of iron or wood used in joining spars, as the mast and the topmast, the bowsprit and the jib boom; also, a covering of tarred canvas at the end of a rope. (d) A percussion cap. See under Percussion. (e) (Mech.) The removable cover of a journal box. (f) (Geom.) A portion of a spherical or other convex surface.
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, foolsap, 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.]
CAP
Cap, v. t. [imp. & p. p. Capped (; p. pr. & vb. n. Capping.]
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. [Obs.] Spenser.