# castle in the air

> English word · Noun · IPA /ˈkɑːs(ə)l ɪn ðiː ˈɛə/

## Definitions
1. A desire, idea, or plan that is unlikely to ever be realized; a visionary project or scheme; a daydream, an idle fancy, a near impossibility.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-09-03.
Canonical page: https://plainspell.com/en/word/castle-in-the-air