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castle in the air

noun
1.
a fanciful or impractical notion or hope; daydream.
Also called air castle, castle in Spain.
Origin of castle in the air
1570-1580
First recorded in 1570-80
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for air castle
Historical Examples
  • It was not easy to take up the old routine and forget the air castle.

    Saxe Holm's Stories Helen Hunt Jackson
  • All daydreaming builds this air castle; all ambition has this as its goal.

    The Nervous Housewife Abraham Myerson
  • "I should like to be the queen of something more substantial than an air castle," she replied laughingly.

    A Fair Mystery

    Bertha M. Clay
  • This was enough to cause nearly every one to look upon it as a bubble or air castle.

  • Moreover, to teach school had long been her secret ambition, the solid foundation of many an air castle.

    Rim o' the World B. M. Bower
  • But, if you value your peace of mind, do not build too gorgeous an air castle on the foundation of this printed thing.

    The Fiction Factory John Milton Edwards
  • You are not talking airship now, Stanny; it's an air castle you have in mind.

  • The dreamer of the future will not dare to build an air castle without at least an option on the site.

    Major Prophets of To-Day Edwin E. Slosson
  • He passes to-day in building an air castle for to-morrow, or in writing yesterday's elegy.

    An English Grammar W. M. Baskervill and J. W. Sewell
  • Peter's heart fell at this, for he had a half hope that he could yet bring himself to demolish his father's air castle.

    The Come Back Carolyn Wells
British Dictionary definitions for air castle

castle in the air

noun
1.
a hope or desire unlikely to be realized; daydream
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Value for air

3
3
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