noun
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A small particle of glowing matter, either molten or on fire, resulting from an electrical surge or excessive heat created by friction.
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A short or small burst of electrical discharge.
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A small, shining body, or transient light; a sparkle.
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(figuratively) A small amount of something, such as an idea or romantic affection, that has the potential to become something greater, just as a spark can start a fire.
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Any of various lycaenid butterflies of the Indomalayan genus Sinthusa.
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(in the plural sparks but treated as a singular) A ship's radio operator.
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(UK, slang) An electrician.
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(cellular automata) A small collection of cells which briefly appears at the edge of a larger pattern before dying off.