all fours
plural noun
1
a
: all four legs of a quadruped
b
: the two legs and two arms of a person when used to support the body
down on all fours
After a few tense moments, she dropped to all fours …
Carl Hiassen
Carl Hiassen2
singular in construction : any of various card games in which points are scored for the high trump, low trump, jack of trumps, and game
Word History
First Known Use
1678, in the meaning defined at sense 1a
Kids Definition
all fours
noun plural
: all four legs of a four-legged animal or both legs and both arms of a person The baby is still crawling on all fours.