[1] : The Collaborative International Dictionary of English v.0.48

awn \awn\ addn, n. oe. awn, agune, from icel. "ogn, pl.
   agnir; akin to sw. agn, dan. avne, goth. ahana, ohg. agana,
   g. agen, ahne, chaff, gr. 'a`chnh, as. egla; prob. from same
   root as e. acute. see 3d ear. root1. bot.
   the bristle or beard of barley, oats, grasses, etc., or any
   similar bristlelike appendage; arista. --gray.
   1913 webster
see also:
ear 

[2] : WordNet (r) 2.0

awn
     n : slender bristlelike appendage found on the bracts of grasses

Awn >> A Words
Awn, definition of term: Awn
awn_pag1.html