Definition of "dog"
A mammal, Canis lupus familiaris, of the genus Canis that has been domesticated for thousands of years, of highly variable appearance due to human breeding.
A male dog, wolf or fox, as opposed to a bitch (a female dog, wolf or fox).
A dull, unattractive girl or woman.
Someone who is morally reprehensible.
Any of various mechanical devices for holding, gripping, or fastening something, particularly with a tooth-like projection.
A metal support for logs in a fireplace.
A hot dog.
To pursue with the intent to catch.
To follow in an annoying way, to constantly be affected by.
To fasten a hatch securely.