glass wool
noun
spun glass similar to wool, used for insulation, filters, etc.
Origin of glass wool
First recorded in 1875–80
Words nearby glass wool
glass menagerie, the,
glass pox,
glass snake,
glass string,
glass tank,
glass wool,
glass-blowing,
glass-faced,
glass-maker,
glassblowing,
glassboro
Example sentences from the Web for glass wool
The gas loses its conductivity when filtered through a plug of glass-wool, or when it is made to bubble through water.
British Dictionary definitions for glass wool
glass wool
noun
fine spun glass massed into a wool-like bulk, used in insulation, filtering, etc