The Collaborative International Dictionary of English v.0.48:

Dabchick \Dab"chick`\ (d[a^]b"ch[i^]k`), n. [For dabchick. See
   Dap, Dip, cf. Dipchick.] (Zool.)
   A small water bird (Podilymbus podiceps), allied to the
   grebes, remarkable for its quickness in diving; -- called
   also dapchick, dobchick, dipchick, didapper,
   dobber, devil-diver, hell-diver, and pied-billed
   grebe.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Devil-diver \Dev"il-div`er\, Devil bird \Dev"il bird`\, n..
   (Zool.)
   A small water bird. See Dabchick.
   [1913 Webster]