Wiktionary
drygulch
vb. (context US slang English) To murder; to attack, assault, especially in an ambush.
Usage examples of "drygulch".
Heman knew Ramon and at least two Apache gals might get steamed if he had his segundo drygulch an Anglo they were on good terms with.
Couple of locals have wound up drygulched, by a person or persons unknown.