Placed in a tomb or sealed in an enclosed space; buried or trapped inside something.
From 'en-' (into) combined with 'tomb' (a burial chamber). The word emerged in Middle English as a direct translation describing the act of placing something in a tomb.
Entombed originally had a solemn, ceremonial meaning, but modern English uses it to describe anything trapped—from a fossil in amber to someone buried under paperwork—showing how ancient words keep gaining new metaphorical lives.
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