man-of-the-earth

[man-uh v-th ee-urth, -urth]
noun, plural men-of-the-earth, man-of-the-earths.
  1. a morning glory, Ipomoea pandurata, of eastern North America, having white flowers and a very large, tuberous root.

Origin of man-of-the-earth

An Americanism dating back to 1825–35
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018