spark
noun.
a momentary flash of light
Synonym: flicker, glint
noun.
merriment expressed by a brightness or gleam or animation of countenance
he had a sparkle in his eye|there's a perpetual twinkle in his eyes
Synonym: light, sparkle, twinkle
noun.
electrical conduction through a gas in an applied electric field
noun.
a small but noticeable trace of some quality that might become stronger
a spark of interest|a spark of decency
noun.
Scottish writer of satirical novels (born in 1918)
noun.
a small fragment of a burning substance thrown out by burning material or by friction
verb.
put in motion or move to act
trigger a reaction|actuate the circuits
verb.
emit or produce sparks
A high tension wire, brought down by a storm, can continue to spark
Synonym: sparkle