Deer at Hampton, perhaps? (3)

I believe the answer is:

roe

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'deer' is the definition.
(roe deer is a kind of deer)

I don't understand how the rest of the clue works.

(Other definitions for roe that I've seen before include "Fish eggs; small deer" , "shy animal" , "If hard, eggs" , "Part of fish, sounds like go through water" , "Lobster's ripe ovary" .)

I've seen this clue in the Evening Standard.

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