Left, right, or clearly central (3)

I believe the answer is:
ear
'left right' is the definition.
The answer and definition can be both body parts as well as being singular nouns.
Maybe there's an association between them I don't understand?
'clearly central' is the wordplay.
'central' says to take the centre.
The middle letters of 'clearly' are 'EAR'.
'or' is the link.
Can you help me to learn more?
(Other definitions for ear that I've seen before include "Seed container" , "Listening organ" , "Seed-bearing part of wheat" , "Auditory organ" , "Part of corn plant" .)
