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A trunnion (from Old French trognon 'trunk') [1] is a cylindrical protrusion used as a mounting or pivoting point. First associated with cannons, they are an important military development. First associated with cannons, they are an important military development.
Trunnion: a cylindrical protrusion used as a mounting and/or pivoting point. On firearms, the barrel is sometimes mounted in a trunnion, which in turn is mounted to the receiver. Turn bolt: A turn bolt refers to a firearm component that where the whole bolt without using a bolt carrier turns to lock/unlock. This is mostly used to describe ...
Word British English meanings Meanings common to British and American English American English meanings pacifier something or somebody that brings peace rubber teat for babies (UK: dummy) paddle a walk through shallow water, especially at the seaside (US approx. wade, also UK usage) [48] an oar used to propel a canoe, kayak or a small boat
Words with specific British English meanings that have different meanings in American and/or additional meanings common to both languages (e.g. pants, cot) are to be found at List of words having different meanings in American and British English. When such words are herein used or referenced, they are marked with the flag [DM] (different meaning).
From the 16th to the mid-19th century, the main form of artillery remained the smoothbore cannon.By this time, the trunnion (a short axle protruding from either side of the gun barrel) had been developed, with the result that the barrel could be held in two recesses in the carriage and secured with an iron band, the "capsquare".
Dummy: Ammunition with an inert warhead, inert primer, and no propellant; used for training or display. Blank : Ammunition with live primer, greatly reduced propellant charge (typically black powder), and no projectile; used for training, demonstration or ceremonial use.
Illustration of a simple three-axis gimbal set; the center ring can be vertically fixed. A gimbal is a pivoted support that permits rotation of an object about an axis. A set of three gimbals, one mounted on the other with orthogonal pivot axes, may be used to allow an object mounted on the innermost gimbal to remain independent of the rotation of its support (e.g. vertical in the first ...
One of the most common uses of dummy pronouns is with weather verbs, such as in the phrases "it is snowing" or "it is hot."[11] In these sentences, the verb (to snow, to rain, etc.) is usually considered semantically impersonal even though it appears syntactically intransitive; in this view, the required it in "it is snowing" is a dummy word that does not refer.