Definitions:
a tall, slender-leaved plant of the grass family, which grows in water or on marshy ground.

a weak or impressionable person

a piece of thin cane or metal, sometimes doubled, which vibrates in a current of air to produce the sound of various musical instruments, as in the mouthpiece of a clarinet or oboe or at the base of some organ pipes

an electrical contact used in a magnetically operated switch or relay

a comblike implement (originally made from reed or cane) used by a weaver to separate the threads of the warp and correctly position the weft.

a set of semi-cylindrical adjacent mouldings like reeds laid together.