guard dog

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noun

a large, aggressive dog, as a German shepherd or Doberman pinscher, trained to guard persons or property and often to attack or restrain on command.

Also, guard·dog.

Origin:
1790–1800

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
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WordNet

guard dog
noun
a dog trained to guard property [syn: watchdog]

WordNet® 3.0, © 2006 by Princeton University.
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Relevant Questions

00:10

Guard dog is always a great word to know.

So is gobo. Does it mean:

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a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes.

Example sentences

Use a guard dog to deter bear or warn of their presence.

Furthermore, you'd better have a good burglar alarm system or a reliable guard

dog because house break-ins are frequent.

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others killing the sheep.

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