Some shingle amid reflected light (5)
I believe the answer is:
gleam
'reflected light' is the definition.
(I've seen this in another clue)
'some shingle amid' is the wordplay.
'some' says the answer is hidden in the clue (some of the parts of the word are used).
'GLEAM' is hidden in the letters of 'shingle amid'.
(Other definitions for gleam that I've seen before include "Brief show of soft light" , "Moderate glow" , "Look in the eye" , "Flash of light" , "shaft" .)