trunnion
/ˈtrʌnjən/
noun
- A cylindrical projection on each side of a cannon or other piece of artillery, supporting it on its carriage.
- Workers greased the trunnions to keep the artillery piece moving smoothly.
- Each trunnion was forged from solid iron to bear the weight of the gun.
- The cannon's trunnion allowed it to pivot up and down for aiming.
- A similar pivot or support on machinery, such as a telescope or industrial equipment.
- The heavy mixer rotated on its trunnions as it blended the ingredients.
- Engineers inspected the trunnion for wear after years of use.
- The telescope's trunnion lets it tilt to track stars across the sky.
Synonyms