fighter aircraft; fighter jet
Refers to a military aircraft designed primarily for air combat. In modern contexts it often means a fighter jet, though the word itself is not limited to jets.
A fighter aircraft flew low over the airport.
The country deployed new fighter aircraft.
Fighter jets scrambled to respond to the enemy aircraft.
Our anti-aircraft guns shot down the enemy fighter jet.
A fighter jet crashed during training.
New fighter jets were deployed to the base.