To do with the ear, some notice (4)
I believe the answer is:
otic
'to do with the ear' is the definition.
I can't judge whether this defines the answer.
'some notice' is the wordplay.
'some' says the answer is hidden in the clue (some of the parts of the word are used).
'OTIC' is hidden within 'notice'.
Can you help me to learn more?
(Other definitions for otic that I've seen before include "of lugs" , "Relating to the ear" , "of concern to the listener" , "in relation to the listener" , "organ" .)