Roots/*h₂erh₃-tro-h₂erh₃-tro-“plowing instrument”Widely acceptedagriculturetoolarable, aratrumInstrumental of *h₂erh₃- giving Latin arātrum (plow), English arable.Related Rootsbʰer-d-“to cut with a sharp edge, to shave”bʰer-s-“top, point, bristling tip”bʰerh₃-“to bore, to pierce through”bʰeyh₂-“to strike, to cut”bʰrewh₁-“to brew, to boil”dʰugh₂-“to milk, to be productive”gallīnā“hen, domestic fowl”gʰordʰ-“to enclose, gird”