Definition of line item veto in English English dictionary
power of the President or Governor to veto individual parts of a bill without vetoing the entire bill (U.S. Politics)
the power of an executive in government to nullify or cancel specific provisions of a bill, usually budget appropriations (without vetoing the entire legislative package)
I'm sorry the speaker isn't here, he's up on the hill on last-minute negotiations. He's going over his prenup and wants a line-item veto. (The West Wing, Season 2, Episode 18, Josh).