| Noun | 1. | western narrow-mouthed toad - small secretive toad with smooth tough skin of central and western North Americaanuran, batrachian, frog, salientian, toad, toad frog - any of various tailless stout-bodied amphibians with long hind limbs for leaping; semiaquatic and terrestrial species Gastrophryne, genus Gastrophryne - primarily tropical narrow-mouthed toads |