Gloss found in Tuvalu street (6)
I believe the answer is:
lustre
'gloss' is the definition.
(I've seen this before)
'in tuvalu street' is the wordplay.
'in' indicates a hidden word.
'LUSTRE' is hidden in the letters of 'tuvalu street'.
'found' acts as a link.
(Other definitions for lustre that I've seen before include "Glory, distinction" , "Distinction < in five years" , "Sheen or renown" , "Glory; soft glow" , "brilliance" .)