Trunnion Trun"nion, n. [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}. [1913 Webster]

2. (Steam Engine) A gudgeon on each side of an oscillating steam cylinder, to support it. It is usually tubular, to convey steam. [1913 Webster]

{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.] [1913 Webster]

The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • trunnion — 1620s, either of two round projections of a cannon, from Fr. trognon core of fruit, stump, tree trunk, from M.Fr. troignon (14c.), probably, from L. truncus (see TRUNK (Cf. trunk)) …   Etymology dictionary

  • trunnion — [trun′yən] n. [Fr trognon, a stump, trunk] 1. either of two projecting pivots, located on each side of a cannon or its mount, by which the muzzle is raised and lowered 2. either of any similar pair of pins or pivots …   English World dictionary

  • Trunnion — A trunnion is a cylindrical protrusion used as a mounting and/or pivoting point. Usages In weapons *In a cannon, the trunnions are the two projections on the side of the barrel which mount the barrel in the carriage. As they allowed the barrel to …   Wikipedia

  • trunnion — noun Etymology: French trognon core, stump Date: circa 1625 a pin or pivot on which something can be rotated or tilted; especially either of two opposite gudgeons on which a cannon is swiveled …   New Collegiate Dictionary

  • trunnion — trunnioned, adj. /trun yeuhn/, n. 1. either of the two cylindrical projections on a cannon, one on each side for supporting the cannon on its carriage. 2. any of various similar supports for machinery. [1615 25; < F trognon trunk, stump, core (of …   Universalium

  • trunnion — noun /ˈtrʌn,i.ən/ a) The short stubby bearings on either side of a cannon; a gudgeon b) A similar rotational bearing comprised of a rotating arc or ring sliding in the groove of a stationary arc, used in machinery to allow a workpiece to be moved …   Wiktionary

  • trunnion — Смотри Цапфа …   Энциклопедический словарь по металлургии

  • trunnion — [ trʌnjən] noun a pin or pivot forming one of a pair on which something is supported. Origin C17: from Fr. trognon core, tree trunk …   English new terms dictionary

  • trunnion — trun·nion …   English syllables

  • trunnion — trun•nion [[t]ˈtrʌn yən[/t]] n. 1) mil either of the two cylindrical projections on a cannon, one on each side, for supporting the cannon on its carriage 2) mac any of various similar supports for machinery • Etymology: 1615–25; < F trognon… …   From formal English to slang

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