under the gun
Definition from Wiktionary, the free dictionary
- (idiomatic) Under great pressure to perform.
- He was under the gun to finish the project quickly.
- (poker) Of, pertaining to, or in the situation of first player to act on the first round of betting.
- James will be under the gun for the first hand of the final table.
- (obsolete, military) Too close to be subject to artillery fire.