nail

nail is a Noun

Definition:

[1] the horny scale of plate of epidermis at the end of the fingers and toes of man and many apes. His nayles like a briddes claws were. Chaucer.

[2] The basal thickened portion of the anterior wings of certain hemiptera.

[3] The terminal horny plate on the beak of ducks, and other allied birds.

[4] A slender, pointed piece of metal, usually with a head, used for fastening pieces of wood or other material together, by being driven into or through them.

[5] A measure of length, being two inches and a quarter, or the sixteenth of a yard. Nail ball (Ordnance), a round projectile with an iron bolt protruding to prevent it from turning in the gun. -- Nail plate, iron in plates from which cut nails are made. -- On the nail, in hand; on the spot; immediately; without delay or time of credit; as, to pay money on the nail. "You shall have ten thousand pounds on the nail." Beaconsfield. -- To hit the nail on the head, to hit most effectively; to do or say a thing in the right way.