spark
noun
a momentary flash of light
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”
electrical conduction through a gas in an applied electric field
a small but noticeable trace of some quality that might become stronger
“a spark of interest”
“a spark of decency”
Scottish writer of satirical novels (born in 1918)
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”
emit or produce sparks
“A high tension wire, brought down by a storm, can continue to spark”
Synonymssparkle
Source: WordNet 3.1, Princeton University