the GNU version of the Collaborative International Dictionary of English
n. A very small arctic sea bird (Mergulus alle, or Alle alle) common on both coasts of the Atlantic in winter; -- called also little auk, dovekie, rotch, rotchie, and sea dove.
The Century Dictionary and Cyclopedia
n. The little auk, auklet, dovekie, or sea-dove, Mergulus alle or Alle nigricans. See Mergulus, Alle, and cut under dovekie. Also rotchie.