Starr of the Beatles (5)
I believe the answer is:
ringo
'starr of the beatles' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for ringo that I've seen before include "Beatles drummer" , "The drumming Beatle" , "John Paul I (and another) backed" , "Member of group" , "Beatle Starr" .)