Meaning of the word "walls have ears" in English

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

walls have ears

US /wɔːlz hæv ɪrz/
UK /wɔːlz hæv ɪəz/
"walls have ears" picture

Idiom

used to warn someone that they should be careful what they say because other people may be listening

Example:
Be quiet and don't mention his name here; walls have ears.
We should talk about this outside; walls have ears in this office.