1. swivelling - Noun
2. swivelling - Verb
Derived from swivel
swivelling
(Britain) present participle of swivel
swivelling (plural swivellings)
The motion of something that swivels.
Jefford 2006, p. 12. The design used a single Bristol Siddeley BS100 engine with four swivelling nozzles, in a fashion similar to the P.1127, and required the use of plenum chamber burning (PCB) to achieve supersonic speeds. Source: Internet
While elevators and swivelling propellers provide fine control of altitude, larger changes of height used to be controlled by either venting gas to lose altitude or dropping ballast to gain altitude. Source: Internet