Awn
Awn (an) , noun
[Old English awn, agune, from Icelandic ogn, pl. agnir; akin to Swedish agn, Danish avne, Gothic ahana, Old High German agana, German agen, ahne, chaff, Greek 'a`chnh, Anglo-Saxon egla; prob. from same root as English acute. See 3d Ear. r1.]
(Botany) The bristle or beard of barley, oats, grasses, etc., or any similar bristlelike appendage; arista. — Gray