The term "bonus cash" refers to an additional sum of money that is given as a reward or incentive for achieving certain goals, performing well, or meeting specific targets. It can be offered by employers to their employees as a form of recognition and appreciation for their hard work and dedication, or it could be awarded to customers who make purchases or reach a certain spending threshold. In some cases, bonus cash may also refer to money that is given in addition to winnings from gambling or lottery games. Overall, the term "bonus cash" implies an extra sum of money that comes as a surprise or additional reward for something done well.