spark
n 1: a momentary flash of light [syn: {glint}, {flicker}]
2: brightness and animation of countenance; "he had a sparkle
in his eye" [syn: {sparkle}, {light}]
3: electrical conduction through a gas in an applied electric
field [syn: {discharge}, {arc}, {electric arc}, {electric
discharge}]
4: a small but noticeable trace of some quality that might
become stronger; "a spark of interest"; "a spark of
decency"
5: a small fragment of a burning substance thrown out by
burning material or by friction
v 1: actuate; "trigger a reaction" [syn: {trip}, {actuate}, {trigger},
{activate}, {set off}, {spark off}, {trigger off}, {touch
off}]
2: emit or produce sparks