He that will give a cap and make a leg in thanks.
Fuller.
4. (Zo÷l.) 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.