# Plattsmouth

> English word · Proper noun

## Definitions
1. A city, the county seat of Cass County, Nebraska, United States.

## Etymology
From Platte + -s- + mouth, situated at the mouth of the Platte River.

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