Crossword Genius

Use spirit in container (4,6)

Ross

I believe the answer is:

milk bottle

'container' is the definition.
(container for milk)

'use spirit' is the wordplay.
'use' becomes 'milk' (I've seen this before).
'spirit' becomes 'bottle' (I have seen 'The spirit' mean 'bottle' so perhaps 'spirit' could also mean 'bottle').
'milk'+'bottle'='MILK BOTTLE'

'in' acts as a link.

I've seen this clue in The Guardian.
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