a sorghum, Sorghum halepense, that spreads by creeping rhizomes, grown for fodder.
Origin of Johnson grass
1880–85, Americanism; named after William Johnson, American agriculturist who first planted it in 1840
Also called Aleppo grass, Egyptian millet, Means grass.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Word Origin for Johnson grass
C19: named after William Johnson (died 1859), American agriculturalist who introduced it
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