ribgrass

noun
rib·grass | \ ˈrib-ˌgras \

Definition of ribgrass 

: plantain entry 1 especially : an Old World plantain (Plantago lanceolata) with long narrow ribbed leaves

First Known Use of ribgrass

circa 1500, in the meaning defined above

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The first known use of ribgrass was circa 1500

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occurring twice a year or every two years

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