Brightness of some Honolulu streets (6)
I believe the answer is:
lustre
'brightness' is the definition.
(lustre is a kind of brightness)
'some honolulu streets' is the wordplay.
'some' says the answer is hidden in the clue (some of the parts of the word are used).
'LUSTRE' can be found hidden inside 'honolulu streets'.
'of' is the link.
(Other definitions for lustre that I've seen before include "Rustle up the sheen" , "Brilliant quality in a material, porcelain, etc" , "Distinction < in five years" , "number of years" , "Glory; soft glow" .)