Something extra that is good; an added benefit. / An extra sum given as a premium, e.g. to an employee or to a shareholder.

(transitive) To pay a bonus, premium

A surname.

A tax credit or payment to families with children, offered by the governments of some countries (including Canada and Australia).

Lacking a bonus

Not pertaining to or obtained via a bonus.

That secures a bonus point

(basketball) The award of two free throws on any sort of foul when enough fouls have been accumulated.

(business) A one-time payment given by a party entering a contractual relationship to another party entering that same contract, as an incentive to finalize the agreement.

(baseball) A baseball player who is given a large bonus when joining a professional league for the first time.