Glossy paint (7)
(Other definitions for lacquer that I've seen before include "Glossy finisher" , "Hard coating for wood" , "16 21 [INDIAN IMPORT]" , "Racquel (anag)" , "protective coat" .)
'glossy paint' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for enamel that I've seen before include "Glassy substance" , "Hard substance covering teeth" , "Hard shiny coating as on teeth" , "protection for canines?" , "Coating for a tooth" .)