'Spark gap' definitions:
Definition of 'spark gap'
(from WordNet)
noun
A component of an ignition system; consists of two shaped electrodes and the space between them
noun
The gap between two high-potential terminals
Definition of 'Spark gap'
From: GCIDE
- Spark gap \Spark gap\ (Elec.) The space filled with air or other dielectric between high potential terminals (as of an electrostatic machine, induction coil, or condenser), through which the discharge passes; the air gap of a jump spark. [Webster 1913 Suppl.]