Adjective
The word is derived from reedy
In The Oboe, Geoffrey Burgess and Bruce Haynes write "The differences are most clearly marked in the middle register, which is reedier and more pungent, and the upper register, which is richer in harmonics on the Viennese oboe". Source: Internet
One choir has a "normal" plucking point, producing a canonical harpsichord sound; the other has a plucking point close to the bridge, producing a reedier "nasal" sound rich in upper harmonics. Source: Internet