means A grand, free-standing tomb or building constructed to hold the remains of a person or family.

from From Latin mausoleum, from Greek Mausoleion — the colossal tomb built for Mausolus, a 4th-century BCE ruler of Caria in Asia Minor. His grieving wife (and sister) Artemisia commissioned a monument so spectacular it became one of the Seven Wonders of the ancient world. The man's name became the word: every fancy tomb since has been borrowing Mausolus's reputation.