The Spanish call in for paint (6)
I believe the answer is:
enamel
'for paint' is the definition.
(I've seen this in another clue)
'the spanish call in' is the wordplay.
'the spanish' becomes 'el' ('the' in Spanish).
'call' becomes 'name' (as in calling or naming someone something).
'in' indicates putting letters inside.
'el' enclosing 'name' is 'ENAMEL'.
(Other definitions for enamel that I've seen before include "Decorative or protective covering on metal or glass." , "Crown Protector?" , "Chopper coating?" , "sort of paint" , "found on crowns" .)