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