Black's Law Dictionary (2nd edition)dictionaries

Legatum Optionis

In Roman law. A legacy to A. B. of any article or articles that A. B. liked to choose or select out of the testator’s estate. If A. B. died after the testator, bnt before makiug the choice or selection, his representative (hares) could not, prior to Justinian, make the selection for him, but the legacy failed altogether. Justinian, however, made the legacy good, and enabled the representative to choose. Brown

Source: Black’s Law Dictionary 2nd Ed (1910)