four corners

noun[plural only]2

1. •
   The face of a document or its contents, considered without reference to any outside information.

   • If Republicans don't think it's a coup or doesn't fit this definition of a coup in all four corners then I'd love to hear what they would call it. — 2020
2. •
   (US) A major intersection and/or economic center in a town.

   • You would say, in an American town, you say it's four corners, where...where a bunch of places come together. — 2023

noun1

1. •
   The quadripoint at the borders of Colorado, New Mexico, Arizona and Utah, and the region surrounding it.

   • Driving north from Gallup, New Mexico, on State Route 491 toward the Four Corners Monument, one passes through the vast, arid lands of the eastern Navajo Nation. — 2018