vomit
vb barf (U.S. slang) belch forth, be sick, bring up, chuck (up) (slang, chiefly U.S.) chunder (slang, chiefly Austral.) disgorge, do a technicolour yawn (slang) eject, emit, heave, puke (slang) regurgitate, retch, sick up (informal) spew out or up, throw up (informal) toss one's cookies (U.S. slang) upchuck (U.S. slang)