mortmainn.
英 'mɔːtmeɪn | 美 'mɔrtmen
中文n. 永久营业；财团法人不动产的永久保管
词根词源
mortmain (n.)"inalienable ownership," mid-15c., from Anglo-French morte mayn, Old French mortemain, literally "dead hand," from Medieval Latin mortua manus; see mortal (adj.) + manual (adj.). Probably a metaphorical expression.
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