Crossword Genius

Crew unable to finish meal (3)

Ross

I believe the answer is:

tea

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'meal' is the definition.
(tea is a kind of meal)

I cannot understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for tea that I've seen before include "Earl Grey?" , "and 18 Across: Utensils for afternoon meal" , "Food" , "Common drink" , "Infusion of dried leaves" .)

I've seen this clue in The Sun and The Times.
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