Reed

noun

1. Any of various types of tall stiff perennial grass-like plants growing together in groups near water.
2. The hollow stem of these plants.
3. Part of the mouthpiece of certain woodwind instruments, comprising a thin piece of wood or metal which shakes very quickly to produce sound when a musician blows over it.
4. A musical instrument such as the clarinet or oboe, which produces sound when a musician blows on the reed.
5. A comb-like part of a beater for beating the weft when weaving.