noun.
A sudden display of brilliance; a flashing of light, a sparkle.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
noun.
a sudden or striking display of brilliance
noun.
the occurrence of a small flash or spark
Word Usage
"Borealian coruscation, which is scarcely within the modest and placid idiosyncracies of sixpence, -- but a gleam of gentle and benign light, just to show where a sixpence had been, and allow you time to say"