[ 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 sand-castle

  • The sand-castle on which Pollyooly and Kathleen had worked so hard stood directly in the line of it.

    Happy Pollyooly|Edgar Jepson
  • But it's my idea that Miss Allonby has too much insight to build herself such a sand-castle.

    The Tree of Knowledge|Mrs. Baillie Reynolds
  • After a while the children tired of rounders and betook themselves to building a sand-castle.

    Happy Pollyooly|Edgar Jepson