Definitions of bear grass:

• noun:   stemless plant with tufts of grasslike leaves and erect panicle of minute creamy white flowers; southwestern United States and Mexico
• noun:   yucca of west central United States having a clump of basal grasslike leaves and a central stalk with a terminal raceme of small whitish flowers
• noun:   yucca of southern United States having a clump of basal grasslike leaves and a central stalk with a terminal raceme of small whitish flowers
• noun:   plant of western North America having woody rhizomes and tufts of stiff grasslike basal leaves and spikes of creamy white flowers