# Siskiyou

> English word · Proper noun · frequency rank #72,765

## Definitions
1. A mountain range and a national forest in northern California and southern Oregon.

## Etymology
Unknown. Perhaps from a Native American language. Sometimes said to be from French six cailloux, "six stones".

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/siskiyou