Crossword Genius

Took much alcohol up in storeroom (5)

Ross

I believe the answer is:

depot

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'storeroom' is the definition.
(I've seen this before)

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

Can you help me to learn more?

(Other definitions for depot that I've seen before include "Store for large quantities" , "Storehouse, repository" , "bus terminus" , "Terminus for transport vehicles" , "Headquarters - storehouse" .)

I've seen this clue in The Sun.
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