[UN-1 4 b.] Evil grain; wild oats.
1513. Douglas, Æneid, IV. Prol. 13. Quhar schame is lost, thait Ripis ȝour perellus frutis and oncorn.
1710. Ruddiman, Gloss. Douglas Æneis, s.v., In some places of Scotland they say, that one hath sown his uncorn.