Definition of crabgrass noun from the Oxford Advanced Learner's Dictionary



BrE BrE//ˈkræbɡrɑːs//
; NAmE NAmE//ˈkræbɡræs//
[uncountable](especially North American English)
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a type of grass that grows where it is not wanted, spreads quickly and is hard to get rid of
See the Oxford Advanced American Dictionary entry: crabgrass