Plane without an engine (6)

I believe the answer is:

glider

'plane without an engine' is the definition.
(I've seen this before)

This is all the clue.

(Other definitions for glider that I've seen before include "Powerless traveller" , "Engineless plane" , "Girdle for silent flier" , "Plane supported by air" , "craft without power" .)

I've seen this clue in The Guardian.

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