rock wool
noun
Origin of rock wool
1First recorded in 1925–30
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024
How to use rock wool in a sentence
I found I have to plant in the spring and always in a tin can, with rock wool over the nut.
Northern Nut Growers Association Report of the Proceedings at the Forty-Second Annual Meeting | Northern Nut Growers Association
British Dictionary definitions for rock wool
rock wool
noun
another name for mineral wool
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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