Member of syndicate wearing the Spanish coat (6)
I believe the answer is:
enamel
'coat' is the definition.
(enamel is a kind of coat)
'member of syndicate wearing the spanish' is the wordplay.
'member of syndicate' becomes 'name' (I can't explain this - if you can you should believe this answer much more).
'wearing' indicates putting letters inside.
'the spanish' becomes 'el' ('the' in Spanish).
'name' inserted within 'el' is 'ENAMEL'.
Can you help me to learn more?
(Other definitions for enamel that I've seen before include "Crown Protector?" , "art form" , "Hard gloss paint" , "Hard-drying paint" , "Glassy coating" .)