Beatles' meter maid (4)
I believe the answer is:
rita
'beatles' meter maid' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for rita that I've seen before include "Educating - - , film" , "-- Hayworth, US film actress" , "subject of education" , "...Hayworth, ...Coolidge, ... ''Educating ...''" , "The Beatles' lovely girl" .)