IPA: /ɪnˈtuːm/
KK: /ɪnˈtum/
To place someone or something in a tomb or grave, or to bury them as if in a tomb.
The ancient Egyptians would entomb their pharaohs with great care and elaborate rituals.
Past: entombed
Past Participle: entombed
Entomb → It is formed from "en-" (meaning to cause to be in) and "tomb" (from Old English "tumba", meaning a burial place). The word "entomb" means to place someone in a tomb or burial place.
Think of being 'caused to be in' a 'burial place' — that's why entomb means to place someone in a tomb.