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Celotex

American  
[sel-uh-teks] / ˈsɛl əˌtɛks /
Trademark.

  1. a brand of board made of cane fiber, used for insulation or as a vapor barrier, siding, or layer under a roof.

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.