Pronunciation

/ˈtrʌnjən/ 🔊

Part of Speech

Noun

Definition

A trunnion is a cylindrical projection on a firearm, cannon, or other weapon, on which it pivots.

Examples

1. “The cannon was mounted on its trunnions for firing.”

2. “The trunnion of the rifle allows for elevation and depression of the barrel.”

Additional Information

Trunnions are commonly found on various types of artillery and heavy machinery to enable rotation and elevation.