reed grass

noun

Definition of reed grass

1 : any of various reeds or reedy grasses: such as
a : a tall perennial grass of the genus Calamagrostis sometimes used for hay especially : an Australian grass (C. quadriseta or Deyeuxia quadriseta)
b : a grass of the genus Arundo especially : giant reed sense 1
d : a grass of the genus Phragmites especially : common reed
2 : bur reed