'all in' definitions:

Definition of 'all in'

From: WordNet
adjective
Very tired; "was all in at the end of the day"; "so beat I could flop down and go to sleep anywhere"; "bushed after all that exercise"; "I'm dead after that long trip" [syn: all in(p), beat(p), bushed(p), dead(p)]

Synonyms of 'all in'

From: Moby Thesaurus