It's used to examine ears (8)
I believe the answer is:
otoscope
'it's used to examine ears' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for otoscope that I've seen before include "Device for looking in ears" , "medical equipment" , "Instrument for visual examination of an ear" , "It's used to examine ears" , "Lug instrument" .)