throw up
     v : eject the contents of the stomach through the mouth; "After
         drinking too much, the students vomited"; "He purged
         continuously"; "The patient regurgitated the food we gave
         him last night" [syn: {vomit}, {vomit up}, {purge}, {cast},
          {sick}, {cat}, {be sick}, {disgorge}, {regorge}, {retch},
          {puke}, {barf}, {spew}, {spue}, {chuck}, {upchuck}, {honk},
          {regurgitate}] [ant: {keep down}]
Source: WordNet® 2.0