castle in the air
noun
a fanciful or impractical notion or hope; daydream.
Origin of castle in the air
1First recorded in 1570–80
- Also called air castle, castle in Spain .
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024
British Dictionary definitions for castle in the air
castle in the air
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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