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Meaning of field day

field' day"

Pronunciation: [key]
  1. a day devoted to outdoor sports or athletic contests, as at a school.
  2. an outdoor gathering; outing; picnic.
  3. a day for military exercises and display.
  4. an occasion or opportunity for unrestricted activity, amusement, etc.: The children had a field day with their new skateboards.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.