A thin mattress filled with straw or sawdust.(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "paillasse" in a sentence
""La paillasse" is a sack full of straw, a straw mattress, fairly rough, so ... no feeling of coziness here!"
"The word "paillasse" comes from “la paille” = 'straw'."
"In an informal way, you can say: "aller au plumard", but you never say “aller à la paillasse” ..."