Meaning of the word "pack rat" in English

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

pack rat

US /ˈpæk ræt/
UK /ˈpæk.ræt/
"pack rat" picture

Noun

a person who collects things, especially things that are not needed

Example:
My grandmother is a real pack rat; her house is full of old newspapers and magazines.
He's a bit of a pack rat, always keeping things just in case.