Tadpole Tad"pole`, n. [OE. tadde toad (AS. t[=a]die, t[=a]dige) + poll; properly, a toad that is or seems all head. See {Toad}, and {Poll}.] 1. (Zo["o]l.) The young aquatic larva of any amphibian. In this stage it breathes by means of external or internal gills, is at first destitute of legs, and has a finlike tail. Called also {polliwig}, {polliwog}, {porwiggle}, or {purwiggy}. [1913 Webster]

2. (Zo["o]l.) The hooded merganser. [Local, U. S.] [1913 Webster]

{Tadpole fish}. (Zo["o]l.) See {Forkbeard} (a) . [1913 Webster]

The Collaborative International Dictionary of English. 2000.