0 to vomit in a way that involves the contents of the stomach coming out of the mouth with great force:
1 the contents of someone's stomach that come out of their mouth with great force when they vomit:
Being a parent can be grim when you're dealing with projectile vomit at 3 a.m.
I was projectile vomiting all night.
I was just saying what a wonderful baby he was and then he projectile-vomited.
A stream of projectile vomit sprayed over everything.
Sometimes when he vomited it was more like projectile vomit.