blackfin cisco

noun

Definition of blackfin cisco

  1. :  a deep-bodied whitefish (Coregonus nigripinnis synonym Leucichthys nigripinnis) with bluish-black fins that formerly inhabited the Great Lakes but is now considered highly endangered or extinct The blackfin cisco disappeared from its once-expansive range in the Great Lakes by 1969, but at least it has managed to escape extinction: a small population, classified by the government of Canada as threatened, survives in unknown numbers in Lake Nipigon, Ontario. — Scott Weidensaul, The Ghost with Trembling Wings, 2002

There's more!

Love words? You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

  • More than 250,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!
Already a subscriber? Log in.

First Known Use of blackfin cisco

1909


Seen and Heard

What made you want to look up blackfin cisco? Please tell us where you read or heard it (including the quote, if possible).

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

an incorrigible rascal

Get Word of the Day daily email!

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!