Upper Peninsula

American

noun

the peninsula between lakes Superior and Michigan constituting the N part of Michigan. U.P.

Upper Peninsula British

noun

a peninsula in the northern US between Lakes Superior and Michigan, constituting the N part of the state of Michigan

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

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Upper Peninsula

He grew up on the Upper Peninsula of Michigan, near the Wisconsin border, and has family near Green Bay.

From The Wall Street Journal ● Jan. 3, 2026

I’m not talking about a motel in the boonies of the Upper Peninsula of Michigan or a drafty log cabin on a lake in Maine or Minnesota.

From Salon ● May 7, 2024

Angela Hall, an Upper Peninsula county chair and Karamo supporter, remembers being impressed by her presence.

From Slate ● May 6, 2024

The U.S. has only one operating nickel mine, the Eagle Mine on Michigan’s Upper Peninsula, which is slated to close around 2026 unless it secures more ore.

From Seattle Times ● Sep. 12, 2023

In the course of their travels, the family visited Iron Mountain, Michigan, a small mining town in the forests of the Upper Peninsula that was Billie’s childhood home.

From "Into the Wild" by Jon Krakauer

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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023