Crossword Genius

Provide food, grub Pole is lacking (5)

Ross

I believe the answer is:

cater

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

I don't understand the rest of the clue.

Can you help me to learn more?

(Other definitions for cater that I've seen before include "Trace (anag.)" , "Provide what is required" , "Supply food for social event" , "so put out food?" , "... you'll see minister" .)

I've seen this clue in The Telegraph.
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