Crossword Genius

See red drop of alcohol's still taken quickly (8)

Ross

I believe the answer is:

snapshot

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'still taken quickly' is the definition.
(I've seen this before)

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

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(Other definitions for snapshot that I've seen before include "Picture" , "Instant record of an event" , "pic" , "print" , "image" .)

I've seen this clue in The Independent.
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