Akademik

1. electrical device to reduce sparking when electrical contacts are opened or closed

2. a wire net to stop sparks from an open fireplace or smokestack

1. : a device for preventing the escape of sparks from a smokestack; especially : a framework of wire in the smokebox of a steam locomotive to arrest the escape of cinders

2. : a device to minimize or prevent electric sparking at a place where a circuit is made and broken

1. a device, consisting of wire netting or other material, used to stop or deflect sparks thrown from an open fireplace, a smokestack, or the like.

2. Elect. a device to reduce sparking at contacts where a circuit is opened and closed.

[1825-35, Amer.]

spark arrester,

1. anything that keeps sparks from flying, such as a piece of mesh on the top of a chimney.

2. Electricity. a device for preventing or minimizing injurious sparking at points where frequent interruptions of the circuit occur, such as in telegraph keys or relays.