vibrating reed vibrating reed /ˈvaɪbreɪtɪŋ riːd/

noun

1. A vibrator consisting of a thin strip of stiff material that vibrates to produce a tone when air streams over it  ( reed , vibrating reed )
   a vibrator consisting of a thin strip of stiff material that vibrates to produce a tone when air streams over it
    The clarinetist fitted a new reed onto his mouthpiece
   the clarinetist fitted a new reed onto his mouthpiece