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Meaning of free lunch

free' lunch'

Pronunciation: [key]
  1. food provided without charge in some bars and saloons to attract customers.
  2. something given with no expectation of repayment, service, responsibility, etc.: In politics there's no free lunch—everyone expects favors to be repaid.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.