5. A clause in an instrument by which some new thing is reserved out of the thing granted, and not in esse before. A proviso.
6. The portion of the sacramental elements reserved for purposes of devotion and for the communion of the absent and sick. A term of canon law, which signifies that the pope reserves to himself appointment to certain benefices. Mental reservation, the withholding, or failing to disclose, something that affects a statement, promise, etc, and which, if disclosed, would materially change its import.
Origin: Cf. F. Reservation, LL. Reservatio. See Reserve.