magneto
nounUK /maɡˈniːtəʊ/
Etymology Clipping of magneto-electric (machine).
1
A small magnetic dynamo, especially one that provides power to the spark plugs of a small internal combustion engine (now mostly used in aircraft).
- Black tracks on the magneto, a hairline crack in the flywheel casing, pitted points or a spitless exhaust — all are clues to potential conkouts1965, Popular Mechanics, volume 123, number 3, page 140: