Middle English, from Anglo-French soiller, suiller, from Old French soil wallow of a wild boar, abyss, from Latin solium chair, bathtub; akin to Latin sedēre to sit — more at sit
Noun (2)
Middle English, from Anglo-French, soil, piece of land, from Vulgar Latin *solium, alteration of Latin solea sole, sandal, foundation timber — more at sole