资料来源 : Webster's Revised Unabridged Dictionary (1913)

Post-obit \Post-o"bit\, n., or Post-obit bond \Post-o"bit bond`\
   . [Pref. post- + obit.] (Law)
   A bond in which the obligor, in consideration of having
   received a certain sum of money, binds himself to pay a
   larger sum, on unusual interest, on the death of some
   specified individual from whom he has expectations.
   --Bouvier.

资料来源 : WordNet®

post-obit bond
     n : a bond made by a reversioner to secure a loan; payable out
         of his reversion