Dais (8)

I think it could be either:

Which length description are you looking for?:

platform

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

This is the entire clue.

(Other definitions for platform that I've seen before include "Raised area for speakers" , "Oil rig < level being raised" , "declaration of principle" , "Raised stand" , "Stage for speaker or rail traveller" .)

I've seen this clue in The Telegraph, the Evening Standard and The Sun.

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