fallen arch

English

Noun

fallen arch (plural fallen arches)

1. (usually in the plural) An instance of flat feet that results from the arch of the foot collapsing.
   • 2003, Jim Wharton & ‎Phil Wharton, The Wharton's Back Book, →ISBN, page 26:

     We sing this to our baffled clients who can't believe that a fallen arch can cause a back spasm.

   • 2005, Anthony L. Komaroff, Harvard Medical School Family Health Guide, →ISBN:

     Many people with fallen arches have no symptoms, but others experience fatigue, pain, or stiffness in the feet, legs, and lower back.