ring-knife

ring-knife

(ring-nīf),
A circular or oval ring with internal cutting edge, on the model of the carpenter's spoke-shave, for shaving off tumors in the nasal and other cavities.
Synonym(s): spoke-shave

ring-knife

(ring'nīf)
A circular or oval ring with internal cutting edge, for shaving off tumors in the nasal and other cavities.