'walk out' definitions:

Definition of 'walk out'

From: WordNet
verb
Stop work in order to press demands; "The auto workers are striking for higher wages"; "The employees walked out when their demand for better benefits was not met" [syn: strike, walk out]
verb
Leave abruptly, often in protest or anger; "The customer that was not served walked out"
verb
Leave suddenly, often as an expression of disapproval; "She walked out on her husband and children"

Synonyms of 'walk out'

From: Moby Thesaurus