Meaning of the word "on all fours" in English

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

on all fours

US /ɑn ɔl fɔrz/
UK /ɒn ɔːl fɔːrz/
"on all fours" picture

Idiom

on hands and knees

Example:
The baby crawled on all fours across the floor.
He dropped his pen and had to get down on all fours to find it under the desk.