noun
( -s )
Etymology: Middle English, from gerund of trepanen to trepan
1. : trepanation
2. : the act or process of removing a disk or core of metal
trepanning is a preliminary step in defusing an unexploded bomb
noun
( -s )
Etymology: Middle English, from gerund of trepanen to trepan
1. : trepanation
2. : the act or process of removing a disk or core of metal
trepanning is a preliminary step in defusing an unexploded bomb
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012