glass wool

American  

noun

1. spun glass similar to wool, used for insulation, filters, etc.

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glass wool British  

noun

1. fine spun glass massed into a wool-like bulk, used in insulation, filtering, etc

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Etymology

Origin of glass wool

First recorded in 1875–80

Example Sentences

Authorities broke into 13 shipping containers labeled as carrying “packages of glass wool and pallets of stone.”

From Washington Times

Authorities then broke into 13 shipping containers labeled as carrying “packages of glass wool and pallets of stone.”

From Seattle Times

"I felt like I'd had my face rubbed with glass wool."

From BBC

The newspaper said glass wool in the roof may have contributed to the spread of the fire in the two-storey building.

From BBC

Too much pressure in a piece of equipment at Torrance's Exxon Mobil refinery resulted in Wednesday's large explosion that sent irritating ash, filled with fiberglass and glass wool, into surrounding neighborhoods.

From Los Angeles Times