[1] : The Collaborative International Dictionary of English v.0.48

watchdog \watch"dog`\ wo^ch"do^g`, n.
   a dog kept to watch and guard premises or property, and to
   give notice of the approach of intruders.
   1913 webster

[2] : WordNet (r) 2.0

watchdog
     n 1: a guardian or defender against theft or illegal practices or
          waste; "she is the global watchdog for human rights
          abuses"
     2: a dog trained to guard property syn: guard dog
see also:
guard dog 

[3] : Moby Thesaurus II by Grady Ward, 1.0

30 moby thesaurus words for "watchdog":
   cerberus, seeing eye dog, bandog, bitch, bowwow, canine, cerberus,
   clanger, custos, dog, fancy dog, guard dog, guardian, guide dog,
   gyp, keeper, kennel, lap dog, pack of dogs, pooch, pup, puppy,
   sheep dog, show dog, sled dog, slut, toy dog, warden, whelp,
   working dog

Watchdog >> W Words
Watchdog, definition of term: Watchdog
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