guard dog

Or guarddog

noun

1. 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.

Word History and Origins

Origin of guard dog¹

First recorded in 1790–1800

Example Sentences

"Sometimes they'd let the guard dog off its leash so that it could bite us. The cruelty was really shocking and it was constant."

From BBC

The breed “is not the best choice for a guard dog since they are extremely friendly, even with strangers,” according to the United Kennel Club.

From Los Angeles Times

She’s such a good family dog and incredible guard dog.

From Los Angeles Times

The Times attempted to interview Kruse at his flagship site in West Point, where a sign warned of guard dogs and instructed visitors to call before entering.

From Los Angeles Times

I glanced at the heavy scimitar lying like a guard dog beside his leg.

From Literature

Related Words

• attack dog