or Sun Belt
noun (sometimes lowercase)
the southern and southwestern region of the U.S.
Origin of Sunbelt
First recorded in 1950–55
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the southern states of the USA
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Online Etymology Dictionary, © 2010 Douglas Harper
The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
The southern and southwestern United States, as in Retirees have been moving to the sun belt for years. It is so called for its warm climate. [Mid-1900s]
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.