A trunnion (from Old French trognon 'trunk') [1] is a cylindrical protrusion used as a mounting or pivoting point. First associated with cannons, they are an important military development.

What are Trunnions and What Are They Used For? Trunnions are mechanical components used in engineering and machinery. They are usually cylindrical or conical projections or pivots that …

The meaning of TRUNNION is a pin or pivot on which something can be rotated or tilted; especially : either of two opposite gudgeons on which a cannon is swiveled.

Trunnion mounts are engineered to provide robust support and precise rotational movement for heavy equipment or components. The fundamental design revolves around cylindrical …

Oct 25, 2025 · (firearms) One of the short stubby bearings on either side of a cannon; a pintle. (engineering) A similar rotational bearing comprising a rotating arc or ring sliding in the groove …

Define trunnion. trunnion synonyms, trunnion pronunciation, trunnion translation, English dictionary definition of trunnion. n. A pin or gudgeon, especially either of two small cylindrical …

What is a Trunnion? A trunnion is a cylindrical protrusion used as a mounting or pivoting point.

Sep 21, 2025 · A trunnion is a cylindrical protrusion used as a mounting and pivoting point, commonly found in various mechanical and structural applications. Trunnions are designed to …

2 senses: 1. one of a pair of coaxial projections attached to opposite sides of a container, cannon, etc, to provide a support.... Click for more definitions.

TRUNNION definition: either of the two cylindrical projections on a cannon, one on each side for supporting the cannon on its carriage. See examples of trunnion used in a sentence.