Star appearing in many westerns? (5)
I believe the answer is:
badge
'star' is the definition.
(thesaurus)
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for badge that I've seen before include "Identifying emblem" , "Distinguishing symbol" , "medal" , "Insignia (of office?)" , "Shield" .)