turn·o·ver 
(tûrnō′vər)
(tûrnō′vər)n.
1. The act or fact of turning over: preventing the turnover of vehicles in accidents.
2. An abrupt change or transfer, as of power or ownership.
3. A small pastry made by covering one half of a piece of dough with a filling, folding the other half over on top, and sealing the edges.
4.
a. The number of times a particular stock of goods is sold and restocked during a given period of time.
b. The amount of business transacted during a given period of time.
c. The number of shares of stock sold on the market during a given period of time.
5.
a. The number of things that are replaced by others of the same kind, or the rate at which this happens: the turnover of red blood cells; a rapid turnover of hospital patients.
b. The number of workers that have left a workplace or industry and been replaced in a given period of time, or the rate at which this happens.
c. The ratio of this number to the number of employed workers in a workplace.
6. Sports A loss of possession of the ball or puck to the opposing team, as by a misplay or an infraction of the rules.
adj.
Capable of being turned or folded down or over: a turnover collar.