Fellow tailing May Queen's close (3)
I believe the answer is:
man
'fellow' is the definition.
(fellow can mean a man)
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for man that I've seen before include "Staff the island" , "Adult human male" , "Attendant" , "-- Friday" , "Geezer" .)