Dictionary.com
Thesaurus.com

cisco

American  
[sis-koh] / ˈsɪs koʊ /

noun

plural

cisco,

plural

ciscoes, ciscos

  1. any of several whitefishes of the genus Coregonus, of the Great Lakes and smaller lakes of eastern North America.

cisco British  
/ ˈsɪskəʊ /

noun

  1. Also called: lake herring.  any of various whitefish, esp Coregonus artedi , of cold deep lakes of North America

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of cisco

An Americanism dating back to 1840–50; from Canadian French, back formation from ciscoette, ciscaouette from Ojibwe; siscowet

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.