trunnion

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

Trunnion \Trun"nion\, noun [OF. trognon the stock, stump, or truck of a tree, F. trognon a core, stalk, fr. tron a trunk, stem. Cf. {Trunk}.]

1. (Gun.) A cylindrical projection on each side of a piece, whether gun, mortar, or howitzer, serving to support it on the cheeks of the carriage. See Illust. of {Cannon}.

2. (Steam Engine) A gudgeon on each side of an oscillating steam cylinder, to support it. It is usually tubular, to convey steam.

{Trunnion plate} (Gun.), a plate in the carriage of a gun, mortar, or howitzer, which covers the upper part of the cheek, and forms a bearing under the trunnion.

{Trunnion ring} (Gun.), a ring on a cannon next before the trunnions. [R.]


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Monday, March 30, 2015 9:20:39 AM Coordinated Universal Time (UTC)

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