To bestow a gift, prize, bonus, treat, etc., upon someone, oneself, some animal, or group as a result of worthy behavior or actions. Often used in passive constructions. It's important to reward children for good behavior and give as little attention as possible to bad behavior. I'm going to reward myself for getting an A in all my subjects with a new video game this weekend. The company is being rewarded for its consumer-friendly business model, with thousands of people switching to their services as a result.