spark Definition in the Cambridge English Dictionary
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Definition of “spark” - English Dictionary

Definition of "spark" - American English Dictionary

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sparknoun [C]

 us   /spɑrk/
a very ​smallbit of something ​burning that ​flies out from a ​fire, or a ​flash of ​lightseen when an ​electriccurrent crosses an ​openspace: Flame, ​smoke, and sparks ​climbed into the ​darksky. Sparks from the ​oldwiringstarted 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 ​smallamount of it: When ​students show a spark of ​interest, I ​try to give them ​extraencouragement.
Idioms

sparkverb [T]

 us   /spɑrk/
to ​start a ​fire: Downed ​powerlines sparked ​fires in several ​parts of ​town. fig.Parks’s ​actions in 1955 sparked the Civil ​Rights Movement. We ​try to ​findstories that will spark ​ourstudents’ imaginations.
(Definition of spark from the Cambridge Academic Content Dictionary © Cambridge University Press)

Definition of "spark" - British English Dictionary

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sparknoun

uk   /spɑːk/  us   /spɑːrk/

spark noun (CAUSE)

C2 [S] a first ​smallevent or ​problem that ​causes a much ​worsesituation to ​develop: That ​smallincident was the spark that set off the ​streetriots.
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spark noun (FIRE/ELECTRICITY)

C2 [C] a very ​smallpiece of ​fire that ​flies out from something that is ​burning, or one that is made by ​rubbing two hard things together, or a ​flash of ​light made by ​electricity: Sparks were ​flying out of the ​bonfire and ​blowingeverywhere. You can ​start a ​fire by ​rubbing two ​drypieces of ​wood together until you ​produce a spark.spark of anger, inspiration, life, etc. a very ​smallamount of a ​particularemotion or ​quality in a ​person
Idioms

sparkverb [T]

uk   /spɑːk/  us   /spɑːrk/
C2 to ​cause the ​start of something, ​especially an ​argument or ​fighting: This ​proposal will ​almostcertainly spark another ​countrywidedebate about ​immigration. The ​recent interest-rate ​rises have sparked new ​problems for ​smallbusinesses. The ​visit of the G20 ​leaders sparked off (= ​caused the ​start of)massdemonstrations.
(Definition of spark from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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