What is "gunshy"

a. 1 Being afraid to use a gun. 2 Frightened by the sound of gunfire. 3 (context idiomatic English) fearing the consequences of repeating an act, especially after being reprimanded.

Gunshy is an American 1998 crime drama film directed by Jeff Celentano and starring William Petersen, Michael Wincott, and Diane Lane.