Dictionary.com
definitions

forb

[fawrb]
noun
  1. any herb that is not a grass or grasslike.

Origin of forb

1920–25; < Greek phorbḗ food, fodder, derivative of phérbein to feed; akin to Old English beorgan, birgan to taste, eat, Old Norse bergja to taste
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for forb

forb

noun
  1. any herbaceous plant that is not a grass

Word Origin for forb

C20: from Greek phorbē food, from pherbein to graze
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Word Origin and History for forb
n.

1924, from Greek phorbe "fodder, forage."

Online Etymology Dictionary, © 2010 Douglas Harper
forb in Science

forb

[fôrb]
  1. A broad-leaved herb (as opposed to a grass), especially one growing in a field, prairie, or meadow.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.