DOG

noun a mean, worthless fellow; a wretch.

2. dog ·noun a quadruped of the genus canis, ·esp. the domestic dog (c. familiaris).

3. dog ·noun a fellow;

— used humorously or contemptuously; as, a sly dog; a lazy dog.

4. dog ·noun an iron with fangs fastening a log in a saw pit, or on the carriage of a sawmill.

5. dog ·noun an iron for holding wood in a fireplace; a firedog; an andiron.

6. dog ·noun a grappling iron, with a claw or claws, for fastening into wood or other heavy articles, for the purpose of raising or moving them.

7. dog ·noun one of the two constellations, canis major and canis minor, or the greater dog and the lesser dog. canis major contains the dog star (sirius).

8. dog ·noun a piece in machinery acting as a catch or clutch; especially, the carrier of a lathe, also, an adjustable stop to change motion, as in a machine tool.

9. dog ·vt to hunt or track like a hound; to follow insidiously or indefatigably; to chase with a dog or dogs; to worry, as if by dogs; to hound with importunity.