sandcastle

[ sand-kas-uhl, -kah-suhl ]

noun

1. a small castlelike structure made of wet sand, as by children at a beach.
2. a plan or idea with little substance.

Word History and Origins

Origin of sandcastle¹

First recorded in 1850–55; sand + castle

Example Sentences

No one likes it when their sandcastle is knocked over, but his reaction is a bit, err, extreme.

From The Daily Beast

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.

From The Daily Beast