spark

Noun

• a small fragment of a burning substance thrown out by burning material or by friction

• Scottish writer of satirical novels (born in 1918)

• a small but noticeable trace of some quality that might become stronger
  • a spark of interest
    
  • a spark of decency
    

• electrical conduction through a gas in an applied electric field

• 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
    

• a momentary flash of light

Verb

• emit or produce sparks
  • A high tension wire, brought down by a storm, can continue to spark
    

• put in motion or move to act
  • trigger a reaction
    
  • actuate the circuits
    

Related words

• Synonyms: 
  Spark , Muriel Spark , Dame Muriel Spark , Muriel Sarah Spark , discharge , arc , electric arc , electric discharge , sparkle , twinkle , light , flicker , glint , trip , actuate , trigger , activate , set off , spark off , trigger off , touch off