Definition of "Markham"

A surname.  examples

A city in southern Ontario, a suburb of Toronto.  examples

A number of places in the United States:

1. A city in Cook County, Illinois, a suburb of Chicago.  examples

2. An unincorporated community in Morgan County, Illinois.  examples

3. An unincorporated community in Saint Louis County, Minnesota.  examples

4. A neighbourhood in south-west Portland, Oregon.  examples

5. A census-designated place in Matagorda County, Texas.  examples

6. An unincorporated community in Fauquier County, Virginia.  examples

7. An unincorporated community in Pittsylvania County, Virginia.  examples

8. A census-designated place in Grays Harbor County, Washington.  examples

A village in Argoed community, Caerphilly county borough, Wales (OS grid ref SO1601).  examples