Meaning of peanut gallery

pea'nut gal"lery

Pronunciation: [key]
  1. the rearmost and cheapest section of seats in the balcony or the uppermost balcony of a theater.
  2. a source of insignificant criticism: No remarks from the peanut gallery!
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.