polliwig \pol"liwig\, polliwog \pol"liwog\, n. oe. polwigle.
   cf. poll head, and wiggle. zool.
   a tadpole; -- called also purwiggy and porwigle.
   1913 webster
see also:
poll wiggle purwiggy porwigle 

tadpole \tad"pole`\, n. oe. tadde toad as. t=adie,
   t=adige + poll; properly, a toad that is or seems all
   head. see toad, and poll.
   1. zool. 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. zool. the hooded merganser. local, u. s.
      1913 webster

   tadpole fish. zool. see forkbeard
      a .
          1913 webster
see also:
toad poll polliwig polliwog porwiggle purwiggy 
tadpole fish forkbeard