Meaning of the word "guard dog" in English

What does "guard dog" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

guard dog

US /ˈɡɑːrd dɔːɡ/
UK /ˈɡɑːrd dɔːɡ/
"guard dog" picture

Noun

1.

a dog trained to guard property or people

Example:
The factory employed a large guard dog to deter intruders.
Our new puppy is too friendly to be a good guard dog.
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