[noun] [C] - an extra amount of money that is given to you as a present or reward in addition to the money you were expectinga productivity bonusa Christmas bonusHe paid me and added a bonus for the new customers I had signed up.The company used to give discretionary bonus payments.(figurative) I love the job, and it's an added bonus (= a pleasant additional thing) that it's so close to home.
BONUS
Meaning of BONUS in English
Cambridge English vocab. Кембриджский английский словарь. 2012