Flash of light (5)
'flash of light' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for glint that I've seen before include "Momentary flash of light" , "Twinkle" , "Bright, brief gleam" , "Give out small flashes of light" , "Small flash of light" .)
'flash of light' is the definition.
(gleam means a sparkling light)
This is all the clue.
(Other definitions for gleam that I've seen before include "Coruscate" , "Flash of light" , "Faint light; (quality) shine (in eyes)" , "Brightness" , "Moderate glow" .)