Rotche

• (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.
Found on http://thinkexist.com/dictionary/meaning/rotche/

Rotche

Rotche noun (Zoology) 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 .
Found on http://www.encyclo.co.uk/webster/R/95
No exact match found