Tropical storm (7)

I think it could be either:

cyclone

typhoon

'tropical storm' is the definition.
(I've seen this before)

This is the entire clue.

(Other definitions for typhoon that I've seen before include "Tropical cyclone" , "Violent storm - WWII aircraft" , "Indian Ocean cyclone" , "Pacific hurricane" , "Violent cyclonic storm" .)

I've seen this clue in the LA Times, the New York Times, The Guardian, The Telegraph, The Mirror, The Independent and The Times.

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