From WordNet (r) 3.0 (2006):
dog
n 1: a member of the genus Canis (probably descended from the
common wolf) that has been domesticated by man since
prehistoric times; occurs in many breeds; "the dog barked
all night" [syn: dog, domestic dog, Canis familiaris]
2: a dull unattractive unpleasant girl or woman; "she got a
reputation as a frump"; "she's a real dog" [syn: frump,
dog]
3: informal term for a man; "you lucky dog"
4: someone who is morally reprehensible; "you dirty dog" [syn:
cad, bounder, blackguard, dog, hound, heel]
5: a smooth-textured sausage of minced beef or pork usually
smoked; often served on a bread roll [syn: frank,
frankfurter, hotdog, hot dog, dog, wiener,
wienerwurst, weenie]
6: a hinged catch that fits into a notch of a ratchet to move a
wheel forward or prevent it from moving backward [syn:
pawl, detent, click, dog]
7: metal supports for logs in a fireplace; "the andirons were
too hot to touch" [syn: andiron, firedog, dog, dog-
iron]
v 1: go after with the intent to catch; "The policeman chased
the mugger down the alley"; "the dog chased the rabbit"
[syn: chase, chase after, trail, tail, tag, give
chase, dog, go after, track]