uncoffin
/ˌʌnˈkɒfɪn/Definitions
1. noun
A coffin or its container that has been removed or opened.
“The uncoffin of the ancient burial site revealed several well-preserved artifacts.”
2. verb
To remove the lid or contents of a coffin, especially in a ritual or ceremonial context.
“The priest uncoffined the remains, preparing them for reburial.”