Bane
Old English bana ‘thing causing death, poison’, of Germanic origin.
wiktionary
From Middle English bane, from Old English bana, from Proto-Germanic *banô (compare Old High German bano(“death”), Icelandic bani(“bane, death”)), from Proto-Indo-European *gʷʰon-on-, from the o-grade of *gʷʰen-(“to strike, to kill”).
From Middle English ban(northern dialect), from Old English bān.
etymonline
bane (n.)
Old English bana "killer, slayer, murderer, a worker of death" (human, animal, or object), also "the devil," from Proto-Germanic *banon, cognate with *banja- "wound" (source also of Old Frisian bona "murderer," Old Norse bani "death; that which causes death," Old High German bana "death, destruction," Old English benn "wound," Gothic banja "stroke, wound"), a word of no certain IE etymology. Sense of "that which causes ruin or woe" is from 1570s. Related: Baneful.
