sandcastle
[sand-kas-uh l, -kah-suh l]
- a small castlelike structure made of wet sand, as by children at a beach.
- a plan or idea with little substance.
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Origin of sandcastle
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for sandcastle
Contemporary Examples
No one likes it when their sandcastle is knocked over, but his reaction is a bit, err, extreme.
Midweek, Mercury retreads over the Sun and Venus in Leo, so best-laid plans will be as solid as a sandcastle in the incoming tide.