stenostome
Sten"o*stome, a. Etym: [Gr. steno`s narrow, little + sto`ma mouth.] (Zoöl.) Defn: Having a small or narrow mouth; -- said of certain small ground snakes (Opoterodonta), which are unable to dilate their jaws.
Sten"o*stome, a. Etym: [Gr. steno`s narrow, little + sto`ma mouth.] (Zoöl.) Defn: Having a small or narrow mouth; -- said of certain small ground snakes (Opoterodonta), which are unable to dilate their jaws.