BONUS

[bo.nus] n [L, lit., good--more at bounty] (1773): something in addition to what is expected or strictly due: as a: money or an equivalent given in addition to an employee's usual compensation b: a premium (as of stock) given by a corporation to a purchaser of its securities, to a promoter, or to an employee c: a government payment to war veterans d: a sum in excess of salary given an athlete for signing with a team