dog

dog (http://definr.com/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: 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]
     3: informal term for a man: "you lucky dog"
     4: someone who is morally reprehensible; "you dirty dog" [syn:
        cad, bounder, blackguard, hound, heel]
     5: 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]
     6: metal supports for logs in a fireplace; "the andirons were
        too hot to touch" [syn: andiron, firedog, dogiron]
     v : go after with the intent to catch [syn: chase, {chase
         after}, trail, tail, tag, go after, track]