lose one's lunch

lose (one's) lunch

slang To vomit. I felt like I was going to lose my lunch from seasickness out on that boat.
See also: lose, lunch

lose one's lunch

Vomit, as in When Anne saw the wound, she thought she'd lose her lunch. This expression does not usually refer to a specific meal and probably survives because of alliteration. [Colloquial; c. 1940]
See also: lose, lunch