SWIVELLING
SWIVEL
pivot, swivel
(verb) turn on a pivot
Source: WordNet® 3.1
Verb
swivelling
(British) present participle of swivel
Noun
swivelling (plural swivellings)
The motion of something that swivels.
Source: Wiktionary
SWIVEL
Swiv"el, n. Etym: [AS. swifan to move quickly, to remove; akin to
Icel. sveifla to whirl, shake, svifa to ramble, to turn. See Swoop,
and cf. Swift a reel, Swift, a.]
1. (Mech.)
Definition: 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. (Mil.)
Definition: A small piece of ordnance, turning on a point or swivel; --
called also swivel gun. Wilhelm. 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.
Swiv"el, v. i.
Definition: To swing or turn, as on a pin or pivot.
Source: Webster’s Unabridged Dictionary 1913 Edition