ribgrass
/ˈrɪbɡrɑːs/ /ˈrɪbɡras/noun
Ribwort plantain, Plantago lanceolata. In later use also: a plant of the genus Plantago or family Plantaginaceae; ( Australian ) the native plantain, P. varia.
Origin
Late 15th century. From either rib or rib + grass; compare discussion at rib.