to set up; to put upright.-to thicken and shorten, as a heated piece of iron, by hammering on the end.-to shorten (a tire) in the process of resetting, originally by cutting it and hammering on the ends.-to overturn, overthrow, or overset; as, to upset a carriage; to upset an argument.-to disturb the self-possession of; to disorder the nerves of; to make ill; as, the fright upset her.-to become upset.-set up; fixed; determined; -- used chiefly or only in the phrase upset price; that is, the price fixed upon as the minimum for property offered in a public sale, or, in an auction, the price at which property is set up or started by the auctioneer, and the lowest price at which it will be sold.-the act of upsetting, or the state of being upset; an overturn; as, the wagon had an upset.