Mackem

Etymology
From regional form of +.

Noun

 * 1)  A native or inhabitant of Sunderland, England.

Usage notes
The primary definition would apply to those born within the city boundaries of Sunderland, including Washington, Houghton-le-Spring and Hetton-le-Hole. Additionally, the term may be extended to a person born within the greater Wearside Area to include all those towns and cities on the banks of the River Wear and its tributaries from its source in Weardale to its mouth at Wearmouth and the towns of the East Durham Coast from Blackhall, north through Peterlee, Horden, Easington, Seaham and Murton.

Proper noun

 * 1) The dialect spoken in these areas.