Noun: trunnion trún-yun
- One of a pair of cylindrical protrusions used as a mounting and/or pivoting point
"The telescope was mounted on trunnions to allow for easy adjustment"
- A cylindrical projection on each side of a cannon (or gun, etc.)
"The cannon's trunnions allowed it to be easily elevated or depressed"
Derived forms: trunnions
Encyclopedia: Trunnion