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Meaning of junk food

junk' food"

Pronunciation: [key]
  1. food, as potato chips or candy, that is high in calories but of little nutritional value.
  2. anything that is attractive and diverting but of negligible substance: the junk food offered by daytime television.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.