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

Switzerland, which is about the size of Michigan’s Upper Peninsula, has a population of some 9.1 million that has grown by about 25% in the 21st century.

From The Wall Street Journal ● Jun. 14, 2026

It will harm those in Arizona who cannot withstand the heat, and it will harm those in Michigan’s Upper Peninsula who cannot stand the cold or snow.

From Slate ● Aug. 26, 2025

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

Gray wolves are currently confined “almost exclusively” to Michigan’s Upper Peninsula, the DNR said.

From Seattle Times ● Apr. 5, 2024

I could drive north, through the Upper Peninsula to Canada, where Chapter Eleven had once thought of going to escape the draft.

From "Middlesex: A Novel" by Jeffrey Eugenides

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