Pronunciation: (bō'nus),[key] —n., —pl.-nus•es. 1. something given or paid over and above what is due.
2. a sum of money granted or given to an employee, a returned soldier, etc., in addition to regular pay, usually in appreciation for work done, length of service, accumulated favors, etc.
3. something free, as an extra dividend, given by a corporation to a purchaser of its securities.
4. a premium paid for a loan, contract, etc.
5. something extra or additional given freely: Every purchaser of a pound of coffee received a box of cookies as a bonus.