Wake of Cloud Left by a Fast Plane in Flight

This page is the CodyCross answer for the clue below from Transport, Group 110, Puzzle 1.

Question is: Wake of Cloud Left by a Fast Plane in Flight

and the answer is: CONTRAIL

Word Meaning:

CONTRAIL — An artificial cloud made by the exhaust of jet aircraft or wingtip vortices that precipitate a stream of tiny ice crystals in moist, frigid upper air.

Definitions from Wiktionary.