Courier Dally? (9)
I believe the answer is:
messenger
'courier' is the definition.
(I know that courier can be written as messenger)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for messenger that I've seen before include "One doing errands" , "Emissary, courier" , "Bearer of communication" , "Courier - don't shoot him" , "Bringer of news, etc" .)