A supporter, perhaps wiry if not wooden (6)
I believe the answer is:
hanger
'a supporter' is the definition.
(thesaurus)
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for hanger that I've seen before include "A large shed for an aircraft" , "suspender" , "Wardrobe item" , "Support in wardrobe" .)