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slang To vomit, especially violently or in great amount. I felt like I was going to blow chunks from seasickness out on that boat.
blow ˈchunks(American English, slang) vomit (= bring food from the stomach back out through the mouth): Harry is green — looks like he’s going to blow chunks.
blow chunksand blow chow and blow grits and blow lunch
tv. to vomit. She drank too much and left the room to blow chunks. Oh my God! She’s blowing grits on my sofa!