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Phrase(s): spit something up
Euph. to vomit something. • She almost spit her dinner up. • Sally was afraid she was going to spit up her dinner. spit up Euph. to vomit. • The food was so bad, she was afraid she would spit up. • Mommy, I have to spit up!
McGrawhill's American Idioms And Phrasal Verbs