House coat? (5)
I believe the answer is:
paint
'house coat?' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for paint that I've seen before include "Catch a likeness" , "Use a brush on canvas" , "Eg, emulsion or gloss" , "Coloured liquid in tins" , "Apply a coat of colour" .)