A mammal, Canis familiaris or Canis lupus familiaris, that has been domesticated for thousands of years, of highly variable appearance due to human breeding.

Any member of the Family Canidae, including domestic dogs, wolves, coyotes, jackals, foxes, and their relatives (extant and extinct); canid.

A male dog, wolf or fox, as opposed to a bitch or vixen.

A dull, unattractive girl or woman.

A man (derived from definition 2).

A coward.

Someone who is morally reprehensible.

A sexually aggressive man (cf. horny).

Any of various mechanical devices for holding, gripping, or fastening something, particularly with a tooth-like projection.

A click or pallet adapted to engage the teeth of a ratchet-wheel, to restrain the back action; a click or pawl. (See also: ratchet, windlass)

A metal support for logs in a fireplace.

The eighteenth Lenormand card.

A hot dog.

Underdog.

(almost always in the plural) Foot.

(from "dog and bone") Phone or mobile phone.

One of the cones used to divide up a racetrack when training horses.

A flop; a film that performs poorly at the box office.

To pursue with the intent to catch.

To follow in an annoying or harassing way.

To fasten a hatch securely.

To watch, or participate, in sexual activity in a public place.

To intentionally restrict one's productivity as employee; to work at the slowest rate that goes unpunished.

To criticize.

To divide (a watch) with a comrade.

Meat from a dog eaten as food.

Meat prepared to be given to a dog as food.

An insult intended to assert hyperbolically that another person has value only as a corpse to be fed to a dog.