Lighter left beside hearing aid? (4)
I believe the answer is:
lamp
'lighter' is the definition.
(I've seen this in another clue)
'left beside hearing aid?' is the wordplay.
'left' becomes 'l' (common abbreviation).
'beside' says to put letters next to each other (I've seen this in other clues).
'hearing aid?' becomes 'amp' (I've seen this in another clue).
'l'+'amp'='LAMP'
(Other definitions for lamp that I've seen before include "bulb" , "Artificial source of illumination" , "Clout" , "Florence Nightingale was the Lady with the . . . ." , "Aladdin's - -" .)