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Webster 1913 Edition


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.]

Webster 1828 Edition


Trunnion

TRUN'NION

,
Noun.
The trunnions of a piece of ordnance, are two knobs which project from the opposite sides of a piece,whether gun, mortar or howitzer, and serve to support it on the cheeks of the carriage.

Definition 2024


trunnion

trunnion

English

trunnion is stubby cylindrical projection from the side of the cannon

Alternative forms

Noun

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.
  3. A similar rotational bearing used in automotive suspensions.