tomb       
noun [ C ] uk/tuːm/ us/tuːm/
B2 (尤指重要人物的)坟墓,陵墓,冢
a large stone structure or underground room where someone, especially an important person, is buried
 Synonym: grave 
 - More examples
 - The tomb was honeycombed with passages and chambers.
 - For centuries the tomb lay inviolate until, by chance, it was discovered by two miners.
 - His tomb was covered with a yellow patina of lichen.
 - When they opened up the tomb they found treasure beyond their wildest dreams.