unborn-widow rule.The legal fiction, assumed under the rule against perpetuities, that a beneficiary’s widow is not yet born at the testator’s death, and thus a succeeding life estate to her voids any remainders because the interest would not vest within the perpetuities period. See RULE AGAINST PERPETUITIES . UNBROKEN unbroken,adj. Not interrupted; continuous <unbroken possession by the adverse possessor>.
[Blacks Law 8th]