Crossword Genius

One of a trio gets food and drink (5)

Ross

I believe the answer is:

cheer

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'food and drink' 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 cheer that I've seen before include "Fare" , "Hearten; shout" , "Festive food and drink" , "provisions for feast" , "hurrah" .)

I've seen this clue in the Evening Standard.
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