A passage between lakes Huron and Michigan, crossed since 1957 by the Mackinac Bridge. The Upper Peninsula of Michigan lies to the north, and historic Mackinac Island lies just to the east.
Definition of Mackinac, Straits of in US English:
Mackinac, Straits of
proper nounˈmakəˌnô
A passage between lakes Huron and Michigan, crossed since 1957 by the Mackinac Bridge. The Upper Peninsula of Michigan lies to the north, and historic Mackinac Island lies just to the east.