Definition of "pleb"

pleb

/plɛb/

noun
plural plebs
1. A commoner, a member of the lower class of a society.
2. (derogatory) A common person, an unsophisticated or cultureless person.
  Quotations
  You're under my roof, you pleb.
  1795, John O'Keeffe, Life's Vagaries, act V, scene ii, line 85
3. (US, slang, usually derogatory) A freshman cadet at a military academy.
  Quotations
  I found some of the novices, plebs they are called, home-sick, and weary with their discipline.
  1838, Caroline H. Gilman, The Poetry of Travelling in the United States..., page 76
  At Annapolis, the natives are crabs, the freshmen plebs, the sophomores youngsters.
  1922, Dialect Notes, number 5, American Dialect Society, page 189
adjective
not comparable
1. Of or concerning the lower class of a society.
2. (derogatory) Undistinguished, commonplace, unsophisticated, vulgar, coarse.