Hypertext Webster Gateway: "watchdog"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Watchdog \Watch"dog`\ (w[o^]ch"d[o^]g`), n.
A dog kept to watch and guard premises or property, and to
give notice of the approach of intruders.
From WordNet (r) 1.7 (wn)
watchdog
n : a dog trained to guard property [syn: {guard dog}]
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