giant reed

English Thesaurus

1. large rhizomatous perennial grasses found by riversides and in ditches having jointed stems and large grey-white feathery panicles (noun.plant)

hypernym	:	reed,
definition	:	tall woody perennial grasses with hollow slender stems especially of the genera Arundo and Phragmites (noun.plant)

member meronym	:	arundo, genus arundo,
definition	:	any of several coarse tall perennial grasses of most warm areas: reeds (noun.plant)