Source : Webster's Revised Unabridged Dictionary (1913)

Newt \Newt\, n. [OE. ewt, evete, AS. efete, with n prefixed, an
   ewt being understood as a newt. Cf. {Eft}.] (Zo["o]l.)
   Any one of several species of small aquatic salamanders. The
   common British species are the crested newt ({Triton
   cristatus}) and the smooth newt ({Lophinus punctatus}). In
   America, {Diemictylus viridescens} is one of the most
   abundant species.

Source : WordNet®

newt
     n : small usually bright-colored semiaquatic salamanders of
         North America and Europe and northern Asia [syn: {triton}]