bulrush

definition: tall rush with soft erect or arching stems found in Eurasia, Australia, New Zealand, and common in North America

example:

speech part: noun

synonyms: bullrush common rush soft rush

definition: tall marsh plant with cylindrical seed heads that explode when mature shedding large quantities of down

example:

speech part: noun

synonyms: bullrush cat's-tail nailrod reed mace reedmace