One planet in seven, usually (5)

I believe the answer is:

venus

'one planet' is the definition.
(Venus is an example)

'in seven usually' is the wordplay.
'in' says the answer is hidden in the clue.
'VENUS' can be found hidden inside 'seven usually'.

(Other definitions for venus that I've seen before include "Roman goddess of love" , "Second nearest planet to the sun" , "Planet; goddess" , "Evening star" , "Next planet in" .)

I've seen this clue in the Evening Standard.

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