Clean up some old gramophones (3)
I believe the answer is:
mop
'clean up' is the definition.
(I've seen this in another clue)
'some old gramophones' is the wordplay.
'some' indicates a hidden word (some parts of the word are used).
'MOP' is hidden in the letters of 'old gramophones'.
(Other definitions for mop that I've seen before include "Clean; mass of hair" , "Cleaning implement" , "Tangle of hair" , "Hair, unkempt" , "Shock of hair; soak (up)" .)