A server of drinks, I am held back by poet (7)
I believe the answer is:
barmaid
'a server' is the definition.
(I know that barmaid is a type of server)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for barmaid that I've seen before include "Pub girl" , "Female serving drinks" , "Pub employee" , "attendant" , "serving lady" .)