Swivel
Swivel , noun
[Anglo-Saxon swīfan to move quickly, to remove; akin to Icelandic sveifla to whirl, shake, svīfa to ramble, to turn. See Swoop, and compare Swift a reel, Swift, a.]
1.
(Mechanics) A piece, as a ring or hook, attached to another piece by a pin, in such a manner as to permit rotation about the pin as an axis.
2.
(Military) A small piece of ordnance, turning on a point or swivel; -- called also swivel gun. — Wilhelm
Collocations (3)
Swivel bridge , a kind of drawbridge that turns round on a vertical axis; a swing bridge.
Swivel hook , a hook connected with the iron strap of a pulley block by a swivel joint, for readily taking the turns out of a tackle.
Swivel joint , a joint, the two pieces composing which turn round, with respect to each other, on a longitudinal pin or axis, as in a chain, to prevent twisting.
Swivel , intransitive verb
To swing or turn, as on a pin or pivot.