turnover
     n 1: the ratio of the number of workers that had to be replaced
          in a given time period to the average number of workers
          [syn: {employee turnover}, {turnover rate}]
     2: made by folding a piece of pastry over a filling
     3: the volume measured in dollars; "the store's dollar volume
        continues to rise" [syn: {dollar volume}]
     4: the act of upsetting something; "he was badly bruised by the
        upset of his sled at a high speed" [syn: {upset}, {overturn}]
Source: WordNet® 2.0