cisco Meaning, Definition & Usage

  1. noun cold-water fish caught in Lake Superior and northward
    lake herring.
  2. noun important food fish of cold deep lakes of North America
    lake herring; Coregonus artedi.

WordNet

Cis"co noun
Definitions
  1. (Zoöl.) The Lake herring (Coregonus Artedi), valuable food fish of the Great Lakes of North America. The name is also applied to C. Hoyi, a related species of Lake Michigan.

Webster 1913