Definition of "Seneca"

A Roman cognomen, notably borne by Lucius Annaeus Seneca, a Roman stoic philosopher, dramatist, and statesman.  examples

A member of a tribe of Native Americans in western New York state.  examples

The Iroquoian language of the Seneca people.  examples

A number of places in the United States, including:

1. A city, the county seat of Nemaha County, Kansas  examples

2. A town in Ontario County, New York.  examples

3. A town and unincorporated community therein, in Crawford County, Wisconsin.  examples

4. A town in Green Lake County, Wisconsin.  examples

5. A town in Shawano County, Wisconsin.  examples

6. A town in Wood County, Wisconsin.  examples