Alternative spelling of trigger-happy

(humorous) The theory and study of firearms and shooting.

a finger used in pulling the trigger of a firearm / the forefinger

The trigger finger of a person eager to fire their weapon or likely to do so unexpectedly.

Rhinecanthus aculeatus, a vividly-coloured tropical fish.

(electronics) Describing a circuit or component that changes its state only when an input signal becomes high.

To fire a gun. / (idiomatic) To commit to a course of action. / (soccer, idiomatic, intransitive) To shoot, kick the ball in hope of scoring a goal. / (tennis, informal) To hit a very powerful shot.

plural of triggering

plural of triggerman

(US slang) A hired gunman; a hitman.