say it: SI-skoh
cisco is a noun meaning "cold-water fish caught in Lake Superior and northward". It carries 2 recorded senses.
cold-water fish caught in Lake Superior and northward
important food fish of cold deep lakes of North America
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for cisco come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.