Jump spark

1.A spark produced by the jumping of electricity across a permanent gap.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
Stan Grayson's book more than makes up for the oversight, examining hot tube ignition, flame ignition, hit-and-miss, make-and-break, diesel and jump spark engines.
Gold jewellery demand in the GCC slumped in the first quarter as consumers in the UAE and Saudi Arabia, the region's most vibrant jewellery markets, came to grips with a price jump sparked by the introduction of five per cent value added tax.
The alarming jump sparked calls by homeless charity Shelter for a massive house building programme to try to end the scandal.