trunnion

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English[edit]

trunnion is stubby cylindrical projection from the side of the cannon

Alternative forms[edit]

Etymology[edit]

From French trognon (core, stump).

Pronunciation[edit]

Noun[edit]

trunnion (plural trunnions)

  1. One of the short stubby bearings on either side of a cannon; a gudgeon.
  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.