n (countable|botany) The hollow stem of these plants.
n (botany|countable) Any of various types of tall stiff perennial grass-like plants growing together in groups near water.
n (countable|music) Part of the mouthpiece of certain woodwind instruments, comprising of a thin piece of wood or metal which shakes very quickly to produce sound when a musician blows over it.
n (countable|music) A musical instrument such as the clarinet or oboe, which produces sound when a musician blows on the reed.