Trunnion
//ˈtɹʌn.jən// noun
noun ·Rare ·Advanced level
Definitions
Noun
- 1 One of the short stubby bearings on either side of a cannon; a pintle.
- 2 A similar rotational bearing comprising a rotating arc or ring sliding in the groove of a stationary arc, used in machinery to allow a workpiece to be moved relative to a fixed tool.
- 3 A shaft, held by a bearing, at each end or side of a rotatable object.
"To discharge, the conveyor is rotated laterally on its trunnions and the metal flows into a ladle carried on a travelling crane, which conveys it to the converter."
- 4 A similar rotational bearing used in automotive suspensions.
Example
More examples"To discharge, the conveyor is rotated laterally on its trunnions and the metal flows into a ladle carried on a travelling crane, which conveys it to the converter."
Etymology
From French trognon (“core, stump”).
Related phrases
More for "trunnion"
Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.