corn belt corn belt {n.} 1. The Midwest; the agricultural section of the United States where much corn is grown. Kansas is one of the slates that lies within the corn belt. Categories: add yours {n.} Source: A Dictionary of American Idioms by A. Makkai, M.T. Boatner, J.E. Gates © 2024 To section: C Subscribe to: American IdiomsIdioms feedEnglish languageHome page and general feed Comment on this entry