- A round pedestal on which merchants once carried out their business, such as the four nails outside The Exchange, Bristol.
- The thin, horny plate at the ends of fingers and toes on humans and some other animals.
"When I'm nervous I bite my nails."
- 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.
- The terminal horny plate on the beak of ducks, and other allied birds.
- An archaic English unit of length equivalent to 1/20th of an ell or 1/16th of a yard (2.25 inches or 5.715 cm).
- The basal thickened portion of the anterior wings of certain hemiptera.
- (intransitive) To drive a nail.
"He used the ax head for nailing."
- (transitive, slang) To expose as a sham.
- (transitive, slang) Of a male, to engage in sexual intercourse with.
"There’s a benefit gala at the Boston Pops tonight, and... well, I’m trying to nail the flautist. - Brian Griffin in the TV series Family Guy"
- (transitive) To fix (an object) to another object using a nail.
"He nailed the placard to the post."
- (slang) To catch.
- (transitive, slang) To hit (a target) effectively with some weapon.
- (transitive) To stud or boss with nails, or as if with nails.
- (transitive, slang) To accomplish (a task) completely and successfully.
"I really nailed that test."
- To spike, as a cannon.