Definition of Plain People in US English:

Plain People

plural noun

US
  • The Amish, the Mennonites, and the Dunkers, three strict Christian sects emphasizing a simple way of life.

    • ‘The Amish, called "The Plain People" or Old Order Amish, originated in Switzerland about l525.’
    • ‘The Amish and Mennonites (sometimes called ‘the Plain People’) are Protestant religious groups stemming from the Anabaptist movement in 16th century Europe.’
    • ‘Also, in keeping with the recent Amish theme I give you ‘The Amish and the Plain People.’’