Etymology of the English word loin
the English word loin
derived from the Old French word loigne
derived from the Classical Latin word lumbus (loins; loins as the seat of sexual excitement)
derived from the Medieval Latin word longia
derived from the Vulgar Latin word lumbra
derived from the Latin root *lumbea caro
derived from the Latin root *lumbeus
derived from the Proto-Germanic root *landwin-