Английский словарь американских идиом - gun for

{v.}, {informal} 1. To hunt for with a gun; look hard for a chance to harm or defeat. * /The cowboy is gunning for the man who stole his horse./ * /Bob is gunning for me because I got a higher mark than he did./ 2. To try very hard to get. * /The man is gunning for first prize in the golf tournament./