Definition of "Locke"

An English surname — famously held by:

1. John Locke (1632 – 1704); an influential English philosopher of the Enlightenment and social contract theorist.  examples

A number of places in the United States:

1. An unincorporated community and historic district in Sacramento County, California.  examples

2. A township and unincorporated community therein, in Elkhart County, Indiana.  examples

3. A township in Ingham County, Michigan.  examples

4. A town in Cayuga County, New York, named after John Locke.  examples