Ask humbly for a pardon? (3)
I believe the answer is:
beg
'ask humbly' 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 beg that I've seen before include "Implore or cadge" , "Plead or ask for alms" , "Beseech or ask for charity" , "Ask humbly" , "Ask for money, scrounge" .)