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castle in the air

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noun

a fanciful or impractical notion or hope; daydream.

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Did you ever collect all those state quarters? Put them to good use on this quiz about curious state monikers and the facts around them.
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Mississippi’s nickname comes from the magnificent trees that grow there. What is it?
Also called air castle, castle in Spain .

Origin of castle in the air

First recorded in 1570–80
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

Example sentences from the Web for castle in the air

British Dictionary definitions for castle in the air

castle in the air

castle in Spain


noun

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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