Definition of bear grass:
(n) :
stemless plant with tufts of grasslike leaves and erect panicle of minute creamy white flowers; southwestern united states and mexico
(n) :
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
(n) :
yucca of southern united states having a clump of basal grasslike leaves and a central stalk with a terminal raceme of small whitish flowers
(n) :
plant of western north america having woody rhizomes and tufts of stiff grasslike basal leaves and spikes of creamy white flowers