Provide food, grub Pole is lacking (5)
I believe the answer is:
cater
'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" .)