Meaning of the word "It's raining cats and dogs" in English

What does "It's raining cats and dogs" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

It's raining cats and dogs

US /ɪts ˌreɪnɪŋ ˌkæts ənd ˈdɔɡz/
UK /ɪts ˈreɪnɪŋ kæts ənd dɒɡz/
"It's raining cats and dogs" picture

Idiom

raining very heavily

Example:
I can't go out now, it's raining cats and dogs!
We had to cancel the picnic because it was raining cats and dogs.