Crew unable to finish meal (3)
I believe the answer is:
tea
'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" .)