L. Lat. In old English law. The returning of land to the donor Fleta, lib. 3, cc. 10, 12. Reversio terrse est tanquam terra re- vertens in possessione donatori, sive hseredibus suis post donum finitum. Co. Litt. 142. A reversion of land is, as it were, the return of the land to the possession of the donor or ills heirs after the termination of the estate granted.