[ˈrəʊtə], (Noun)

Definitions:
- a hub with a number of radiating aerofoils that is rotated in an approximately horizontal plane to provide the lift for a helicopter or other rotary wing aircraft

- the rotating assembly in a turbine

- a large eddy in which the air circulates about a horizontal axis, especially in the lee of a mountain
(e.g: a rotor cloud)


Phrases:

Origin:
late 19th century: formed irregularly from rotator