gum weed

gumweed

[guhm-weed]
noun
any of various New World composite plants of the genus Grindelia, having yellow flower heads and covered with a viscid secretion.
Also called gum plant.


Origin:
gum1 + weed1

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Based on the Random House Dictionary, © Random House, Inc. 2014.
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WordNet
gumweed

noun
any of various western American plants of the genus Grindelia having resinous leaves and stems formerly used medicinally; often poisonous to livestock 
WordNet® 3.0, © 2006 by Princeton University.
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