• A covering for the head • One usually with a visor but without a brim, for men and boys • One of lace, muslin, etc., for women, or infants • One used as the mark or ensign of some rank, office, or dignity, as that of a cardinal. • The top, or uppermost part; the chief. • A respectful uncovering of the head. • The whole top of the head of a bird from the base of the bill to the nape of the neck. • Anything resembling a cap in form, position, or use • The uppermost of any assemblage of parts; as, the cap of column, door, etc.; a capital, coping, cornice, lintel, or plate. • Something covering the top or end of a thing for protection or ornament. • 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. • A percussion cap. See under Percussion. • The removable cover of a journal box. • A portion of a spherical or other convex surface. • A large size of writing paper; as, flat cap; foolscap; legal cap. • 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. • To deprive of cap. • To complete; to crown; to bring to the highest point or consummation; as, to cap the climax of absurdity. • To salute by removing the cap. • To match; to mate in contest; to furnish a complement to; as, to cap text; to cap proverbs. • To uncover the head respectfully.