verb/ʒɔ̃.ʃe/
to scatter, sprinkle (e.g. flowers); to cover, litter, to be strewn over (be widespread, be sprawled across/around)
“La table, avec toutes les assiettes, était renversée; de la sauce, de la viande, les couteaux, la salière et l'huilier jonchaient l'appartement; […].”
From jonc (“cane, reed”) + -er. Stalks of cane were often used as a floor covering in the Middle Ages.