Webster’s Revised Unabridged Dictionary · 1913
Menobranch
Men′o·branch (mĕn′ō·brăn̲k), Men′o·bran′chus (·brăn′kŭs), n. [NL. menobranchus, fr. Gr. μένειν to remain + βράγχιον a gill.] (Zoöl.) A large aquatic American salamander of the genus Necturus, having permanent external gills.