swivel

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Related to swivelling: stirred up, holding back

swivel

1. a coupling device which allows an attached object to turn freely
2. such a device made of two parts which turn independently, such as a compound link of a chain

swivel

[′swiv·əl]
(design engineering)
A part that oscillates freely on a headed bolt or pin.
(petroleum engineering)
A short piece of casing having one end belled over a heavy ring, and having a large hole through both walls, the other end being threaded.
References in periodicals archive ?
The Hybrid Mining Bolt Swivel Anchor and the Mining Bolt Anchor with Swivelling
We think that swivelling both headlights may be a little bit too dramatic for some situations," says Hendrischk, "so the other alternative is keep one of the lamps steady and just swivel the inboard one.
The first cars with swivelling lights should be available next year,it was reported in The Engineer magazine.