Tag adorning the woman's round collar (9)
I believe the answer is:
apprehend
'collar' is the definition.
(synonyms)
'tag adorning the woman's' is the wordplay.
I cannot quite see how this works, but
'woman' could be 'hen' and 'hen' is found in the answer.
This explanation may well be incorrect...
'round' acts as a link.
Can you help me to learn more?
(Other definitions for apprehend that I've seen before include "Detain" , "Get the meaning of or take into custody" , "Uneasily anticipate" , "Dread; capture" , "Fear - arrest" .)