Read about strange part of hearing (7)
I believe the answer is:
eardrum
'part of hearing' is the definition.
(I've seen this before)
'read about strange' is the wordplay.
'about' indicates an anagram.
'strange' becomes 'rum' (synonyms).
'read' is an anagram of 'eard'.
'eard'+'rum'='EARDRUM'
(Other definitions for eardrum that I've seen before include "It vibrates to sound" , "One hears" , "Tympanic membrane" , "hearing part" , "Organ membrane" .)