[ sand-kas-uh l, -kah-suh l ]
/ ˈsændˌkæs əl, -ˌkɑ səl /


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

Origin of sandcastle

First recorded in 1850–55; sand + castle Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for sandcastle