Notices Charlie has long hair (6)
I believe the answer is:
clocks
'notices charlie' is the definition.
'clocks' can be an answer for 'notices' (I've seen this before). I'm not sure about the 'charlie' bit.
'long hair' is the wordplay.
'long' becomes 'c' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'hair' becomes 'locks' (locks can mean hair).
'c'+'locks'='CLOCKS'
'has' is the link.
Can you help me to learn more?
(Other definitions for clocks that I've seen before include "Notices" , "Timepieces" , "Timers" .)