Longman Dictionary of Contemporary English homepage

spark

2 verb
     
Related topics: Electricity
spark2
1 [transitive] also spark something ↔ off to be the cause of something, especially trouble or violence [= provoke]:
The police response sparked outrage in the community.
A discarded cigarette sparked a small brush fire.
2

spark somebody's interest/hope/curiosity etc

to make someone feel interested, hopeful etc:
topics that spark children's imaginations
3 [intransitive]TPE to produce sparks of fire or electricity

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