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English definition of “spark”

spark

noun [C]  /spɑrk/ us  
a very small bit of something burning that flies out from a fire, or a flash of light seen when an electric current crosses an open space: Flame, smoke, and sparks climbed into the dark sky. Sparks from the old wiring started the fire. fig.No one can light the spark that will make you a writer (= the thing that causes you to write). A spark of something is a small amount of it: When students show a spark of interest, I try to give them extra encouragement.
Idioms

spark

verb [T]  /spɑrk/ us  
to start a fire: Downed power lines sparked fires in several parts of town. fig.Parks’s actions in 1955 sparked the Civil Rights Movement. We try to find stories that will spark our students’ imaginations.
(Definition of spark from the Cambridge Academic Content Dictionary © Cambridge University Press)
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