British spelling variant of ensepulcher; to entomb or place in a sepulcher.
From en- + sepulchre (British English spelling of sepulcher, from Latin sepulchrum). The -re ending is the standard British English convention for words derived from French.
This is just the British spelling of ensepulcher—the '-re' ending instead of '-er' is one of those quirks that separated American and British English, but both versions have been used since medieval times.
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