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Meaning of cloud-cuckoo-land

cloud-cuck•oo-land

Pronunciation: (kloud'k"k-land", -kook"-), [key]
— n.
  1. an idealized, illusory domain of imagination; cloudland: the cloud-cuckoo-land of technicolor cartoon whimsy.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.