One may put on coat and bra, thus fixed with pin (10)
I believe the answer is:
paintbrush
'one may put on coat' is the definition.
I can't judge whether this defines the answer.
'bra thus fixed with pin' is the wordplay.
'fixed with' indicates anagramming the letters.
'bra'+'thus'='brathus'
'brathus' mixed up with 'pin' gives 'PAINTBRUSH'.
'and' is the link.
Can you help me to learn more?
(Other definitions for paintbrush that I've seen before include "applicator such as this" , "Artist's tool" , "Artist's applier" .)