Here is the meaning of the word, CAP

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