A drink that's lacking in body? (6)

I believe the answer is:

spirit

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'a drink' is the definition.
(I've seen this in other clues)

I don't understand the remainder of the clue.

(Other definitions for spirit that I've seen before include "Mettle" , "Brandy" , "Demon - drink" , "Ghost or strong drink" , "Ghost - pluck" .)

I've seen this clue in the Evening Standard.

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