groundling

adj. superficial, shallow; uncritical, not thinking deeply

n. plant or animal that lives close to the ground; fish that live near the bottom of the water; person with poor taste

A "Groundling" was a person that frequented the Globe Theater in the early 1600's who was to poor to pay to be able to sit on one of the three levels of the theater. By paying one penny, they could stand in "The Pit", also called "The Yard", just below the stage and watch the play. Standing in the pit was uncomfortabe, and most times people were packed like sardines, keeping eachother standing. Groundlings were known to misbehave and even throw food at characters they didn't like.
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Noun
1. in Elizabethan theater: a playgoer in the cheap standing section
(hypernym) playgoer, theatergoer, theatregoer

(n.)
A spectator in the pit of a theater, which formerly was on the ground, and without floor or benches.
  

(n.)
A fish that keeps at the bottom of the water, as the loach.
  

Synonyms and related words:
Adamite, Babbitt, Philistine, arriviste, attender, audience, auditory, being, body, boor, bounder, bourgeois, cad, cat, chap, character, churl, claqueur, clown, congregation, creature, customer, deadhead, duck, earthling, epicier, fellow, gallery, guttersnipe, guy, hand, head, hired applauder, homo, hooligan, house, human, human being, ill-bred fellow, individual, joker, life, living soul, looby, lout, low fellow, man, mortal, moviegoer, mucker, nose, nouveau riche, one, orchestra, party, parvenu, pass holder, peasant, person, personage, personality, pit, playgoer, ribald, rough, roughneck, rowdy, ruffian, single, somebody, someone, soul, spectator, standee, tellurian, terran, theater, theatergoer, upstart, vulgarian, vulgarist, worldling, yokel