Definitions of watchdog

n a dog trained to guard property

guard dog
show 8 types...
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long-established Hungarian breed of tall light-footed but sturdy white dog; used also as a hunting dog
attack dog
a watchdog trained to attack on command
a dog trained to guard a house
breed of small stocky black dogs originally used as watchdogs on boats in the Netherlands and Belgium
any of three breeds of dogs whose ears and tail are usually cropped
Doberman, Doberman pinscher
medium large breed of dog of German origin with a glossy black and tan coat; used as a watchdog
miniature pinscher
small German version of a Doberman pinscher
affenpinscher, monkey dog, monkey pinscher
European breed of small dog resembling a terrier with dark wiry hair and a tufted muzzle
Type of:
working dog
any of several breeds of usually large powerful dogs bred to work as draft animals and guard and guide dogs

n a guardian or defender against theft or illegal practices or waste

“she is the global watchdog for human rights abuses”
Type of:
defender, guardian, protector, shielder
a person who cares for persons or property

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