Pink lady? (5)

I think it could be either:

Which length description are you looking for?:

coral

This clue is a double definition.

'pink' is the first definition.
(coral is a kind of pink)

'lady?' is the second definition.

(Other definitions for coral that I've seen before include "Marine polyps, often forming reefs" , "Shade of pink" , "Orangey-pink" , "Reef-forming skeletons" , "Reef-forming sea life" .)

I've seen this clue in the Evening Standard.

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