dog

1. dog (noun) — sense 1

Definition: A mammal of the family Canidae:: The species Canis familiaris (sometimes designated Canis lupus familiaris), domesticated for thousands of years and of highly variable appearance because of human breeding.

Example: The dog barked all night long.

2. dog (noun) — sense 2

Definition: A mammal of the family Canidae:: Any member of the family Canidae, including domestic dogs, wolves, coyotes, jackals, and their relatives (extant and extinct).

Example: This includes the development of hyena-like bone crushers (Osteoborus and Borophagus), a large bone-crushing hunting dog (Aelurodon), and another borophagine frugivorous dog (Carpocyon).

3. dog (noun) — sense 3

Definition: A mammal of the family Canidae:: A male dog, wolf, or fox, as opposed to a bitch or vixen.

Example: Entirely disregarding sex, Ch. Searchlight has a beautiful Cocker head, but as he is a dog, his head is too fine and far too much upon the bitchy order.

4. dog (verb) — sense 4

Definition: To pursue with the intent to catch.

5. dog (verb) — sense 5

Definition: To follow in an annoying or harassing way.

Example: The woman cursed him so that trouble would dog his every step.

6. dog (verb) — sense 6

Definition: To fasten a hatch securely.

Example: It is very important to dog down these hatches.