noun🔗ShareCastillo de arenaA sculpture made of sand and resembling a miniature castle; typically, but not always, made for fun by a child on a beach."The little boy spent the whole afternoon building a magnificent sandcastle on the beach, complete with towers and a moat. "El niño pequeño pasó toda la tarde construyendo un magnífico castillo de arena en la playa, con torres y un foso.architecturematerialgeologyartenvironmentplacebuildingholidayoceanentertainmentChat with AIVocabulary GamePractice Reading