Piercing spot
I believe the answer is:
ear
'piercing spot' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for ear that I've seen before include "Part of corn plant" , "Speculator ignoring British" , "Musical ability" , "Ability to recognise sounds" , "'Give every man thine ..., but few thy voice' (Hamlet)" .)