n. The act of rolling down.n. The act of devolving, transferring, or handing over; transmission from one person to another; a passing or falling to a successor, as of office, authority, or real estate.n. In Scots law: The reference made by two or more arbiters who differ in opinion to an oversman or umpire to determine the difference.n. The falling of a purchase made under articles of roup to the next highest offerer, on the failure of the highest bidder to find caution for payment of the price within the time limited by the articles.n. The opposite of evolution; degeneration.