An amphismela is an anatomical knife, edged on both sides. The term comes from the Greek αμφι (utrinque, "on both sides"), and μελιζω (incido, "I cut").
This article incorporates text from a publication now in the public domain: Chambers, Ephraim, ed (1728). "article name needed". Cyclopædia, or an Universal Dictionary of Arts and Sciences (first ed.). James and John Knapton, et al.
The original article can be found at Amphismela and the edit history here.