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jump spark

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noun Electricity.

spark¹(def 2).

Origin of jump spark

First recorded in 1905–10

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for jump spark

Historical Examples of jump spark

It has a float-feed carburetor, mechanical oiler, and the ignition system is the jump-spark—the best for this style of motor.
Tom Swift and his Motor-boat
Victor Appleton