Gloss target (3)
I believe the answer is:
lip
'gloss target' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for lip that I've seen before include "Sauce" , "Insolence (slang)" , "Brim" , "Rim; impudence (slang)" , "Fleshy fold of mouth tissue" .)