A murder suspect finally admits items in hearing (8)
I believe the answer is:
eardrums
'items in hearing' is the definition.
(the eardrum is a part of the year)
'a murder suspect finally admits' is the wordplay.
'suspect' indicates an anagram.
'finally' says to take the final letters.
The final letter of 'admits' is 's'.
'a'+'murder'='amurder'
'amurder' anagrammed gives 'eardrum'.
'eardrum'+'s'='EARDRUMS'
(Other definitions for eardrums that I've seen before include "Membranes that vibrate when sound strikes them" , "auditors" , "Hearing membranes" .)