a legal transfer of land or property to multiple people at the same time, making them joint owners.
From co- (together) + infeoff (to invest with a fief or property) + -ment (noun suffix). Infeoff comes from Middle English and Old French feoff, related to fief (feudal estate).
In medieval times, coinfeftment was the legal way to protect property—if one owner died, the others automatically kept their share rather than the king seizing everything.
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