Definitions from Wiktionary ( )

▸ noun:  The thin, horny plate at the ends of fingers and toes on humans and some other animals.
▸ noun:  The basal thickened portion of the anterior wings of certain hemiptera.
▸ noun:  The terminal horny plate on the beak of ducks, and other allied birds.
▸ noun:  The claw of a bird or other animal.
▸ noun:  A spike-shaped metal fastener used for joining wood or similar materials. The nail is generally driven through two or more layers of material by means of impacts from a hammer or other device. It is then held in place by friction.
▸ noun:  A round pedestal on which merchants once carried out their business, such as the four nails outside The Exchange, Bristol.
▸ noun:  An archaic English unit of length equivalent to ¹⁄₂₀ of an ell or ¹⁄₁₆ of a yard (2+¹⁄₄ inches or 5.715 cm).
▸ verb:  (transitive) To fix (an object) to another object using a nail.
▸ verb:  (intransitive) To drive a nail.
▸ verb:  (transitive) To stud or boss with nails, or as if with nails.
▸ verb:  (slang) To catch.
▸ verb:  (transitive, slang) To expose as a sham.
▸ verb:  (transitive, slang) To accomplish (a task) completely and successfully.
▸ verb:  (transitive, slang) To hit (a target) effectively with some weapon.
▸ verb:  (transitive, vulgar, slang) Of a male, to engage in sexual intercourse with.
▸ verb:  (military) To spike, as a cannon.
▸ verb:  (transitive) To nail down: to make certain, or confirm.
▸ verb:  (slang, transitive, obsolete) To steal.
▸ noun:  A surname transferred from the nickname.

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