Meaning of the word "cat door" in English

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

cat door

US /ˈkæt dɔːr/
UK /kæt dɔːr/
"cat door" picture

Noun

a small opening in a door or wall through which a cat can enter and leave a building

Example:
My cat loves using the cat door to go outside.
We installed a new cat door in the back door.