Waterproof jacket (6)

I think it could be either:

Which length description are you looking for?:

anorak

'waterproof jacket' is the definition.
(I've seen this before)

This is the entire clue.

(Other definitions for anorak that I've seen before include "Jacket for an obsessive?" , "Garment; studious person" , "good on most figures?" , "Raincoat" , "Casual outerwear" .)

I've seen this clue in the Evening Standard, The Independent, The Wall Street Journal, The Mirror and The Telegraph.

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