ˈox-bane [f. ox + bane n.1] A plant injurious to cattle; now, applied to the Poison-bulb of South Africa, Buphane toxicaria. 1611Cotgr., Mort aux bœufs, ox-bane; an hearbe whereof if an Ox eat, he dies forthwith of the Squinzie.1706Phillips, Ox-bane, a sort of Herb.