Large Scale, Rotating Air Mass

This page is the CodyCross answer for the clue below from Circus, Group 100, Puzzle 3 (Modern Circus).

Question is: Large Scale, Rotating Air Mass

and the answer is: CYCLONE

Word Meaning:

CYCLONE — (loosely) Any weather phenomenon consisting of a system of winds rotating around a centre of low atmospheric pressure; a low pressure system.

Definitions from Wiktionary.