spark arrester

American  

noun

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

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spark arrester Scientific  

/ spärk /

1. A device designed to keep sparks from escaping, as at a chimney opening or where materials are being welded.

2. A device used to control or curtail electric sparking at a point where a circuit is made or broken.

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Etymology

Origin of spark arrester

An Americanism dating back to 1825–35