spark
     n 1: a momentary flash of light [syn: {flicker}, {glint}]
     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: Scottish writer of satirical novels (born in 1918) [syn: {Muriel
        Spark}, {Dame Muriel Spark}, {Muriel Sarah Spark}]
     6: a small fragment of a burning substance thrown out by
        burning material or by friction
     v 1: put in motion or move to act; "trigger a reaction"; "actuate
          the circuits" [syn: {trip}, {actuate}, {trigger}, {activate},
           {set off}, {spark off}, {trigger off}, {touch off}]
     2: emit or produce sparks; "A high tension wire, brought down
        by a storm, can continue to spark" [syn: {sparkle}]
Source: WordNet® 2.0