1. a musical instrument that sounds by means of a vibrating reed
Synonym: beating-reed instrumentreed instrument
2. a vibrator consisting of a thin strip of stiff material that vibrates to produce a tone when air streams over it
e.g. the clarinetist fitted a new reed onto his mouthpiece
Synonym: vibrating reed
3. tall woody perennial grasses with hollow slender stems especially of the genera Arundo and Phragmites