Noun

(uncountable) The state or fact of being turbulent or agitated; tempestuousness, disturbance.

(uncountable) Disturbance in a gas or fluid, characterized by evidence of internal motion or unrest.

(uncountable) Specifically, a state of agitation or disturbance in the air which is disruptive to an aircraft.

An instance or type of such state or disturbance.

Noun

(en noun)

A state of turbulent motion.

An agitated disturbance or a hubbub.

* {{quote-book, year=1963, author=(Margery Allingham), title=(The China Governess)

, chapter=19 citation , passage=When Timothy and Julia hurried up the staircase to the bedroom floor, where a considerable commotion was taking place, Tim took Barry Leach with him. He had him gripped firmly by the arm, since he felt it was not safe to let him loose, and he had no immediate idea what to do with him.}}

(euphemistic) Sexual excitement.

{{quote-Fanny Hill, part=3 , and now, glancing my eyes towards that part of his dress which cover'd the essential object of enjoyment, I plainly discover'd the swell and commotion there}}