'Peanut gallery' definitions:

Definition of 'peanut gallery'

From: WordNet
noun
(figurative) people whose criticisms are regarded as irrelevant or insignificant (resembling uneducated people who throw peanuts on the stage to express displeasure with a performance); "he ignored complaints from the peanut gallery"
noun
Rearmost or uppermost area in the balcony containing the least expensive seats [syn: second balcony, family circle, upper balcony, peanut gallery]

Definition of 'Peanut gallery'

From: GCIDE
  • Peanut gallery \Pea"nut gal"ler*y\
  • 1. The cheapest seats in a theater, being typically those farthest from the stage, as in the uppermost balcony. [PJC]
  • 2. In a television show for children, the section where visiting children sit as guests during the performance. [PJC]
  • 3. Hence: Any group of children, or the chidren in a group of people; as, let's have no noise from the peanut gallery. [Colloq.] [PJC]