Pronunciation
Etymology
[ 'on ] (noun.) 12th century. Middle English aw(u)ne, agune, agene, from Old Danish aghn (compare modern avne), from Proto-Germanic *aganō, *ahanō 'chaff' (compare Old English ægnan, Frisian/Dutch agen, German Ahne, Agen), from Proto-Indo-European *ak̑anā (compare Old Latin agna 'ear of wheat', Lithuanian ašnìs 'edge, blade', Czech osina, Ancient Greek ákaina 'spike, prick', ákanos 'pine-thistle', Sanskrit aśáni 'thunderbolt, arrow tip'), from *h₂eḱ 'sharp'. More at edge.