hair trigger

1. 1.

   a gun trigger that responds with little pressure

   Broadergun trigger

Questions about hair trigger

What does hair trigger mean?

hair trigger means "a gun trigger that responds with little pressure".

Is hair trigger a common word?

hair trigger is banded "Rare" — specialist or archaic — most readers will not have met it. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.