a weedy rye
grass (Lolium temulentum
) with poisonous
seeds, often found in grainfields
Webster’s New World College Dictionary, 4th Edition. Copyright © 2010 by
Houghton Mifflin Harcourt. All rights reserved.
Word origin of 'darnel'ME < Fr dial. (Wal) darnelle, prob. < OFr dial. darnu, stupefied (< Frank *darn) + niella < VL nigella, black caraway < L niger, black: so called from its supposed stupefying qualities