Also found in: Dictionary.
Related to chuck up: chuck up the sponge
To vomit. A noun or pronoun can be used between "chuck" and "up." When I had the flu, I think I chucked up everything I'd ever eaten in my entire life.
chuck something up
to vomit something up. Don't give chocolate to the dog. It will just chuck it up later. The dog chucked up the grass it had eaten.