This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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n. A sudden display of brilliance; a flashing of light, a sparkle.

n. A sudden flash or play of light.

n. A flash of intellectual brilliancy.

n. A flash or gleam of light; a burst or play of light, as the reflection of lightning by clouds or of moonlight on the sea.

n. Figuratively, a flash or gleam of intellectual brilliancy.

n. Synonyms See glare, v.

n. a sudden or striking display of brilliance

n. the occurrence of a small flash or spark

"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"

genius    brilliance    flash   

flash    sparkle    blaze    gleam    glitter   

beldame    labouring    heartful    basisbecause    dust-coat