noun, masculine/mat.la/
matelas is masculine in French.
mattress; wad (of notes); synonym of tacos français (“French tacos”)
Synonyms: tacos français
From Old French materas, probably from Italian materasso (perhaps via Frankish), from Arabic مَطْرَح (maṭraḥ, “carpet, place where something is thrown”), from طَرَحَ (ṭaraḥa, “to throw”). Doublet of matras.