Something that promotes or enhances well-being; an advantage: The field trip was of great benefit to the students. Help; aid. A payment made or an entitlement available in accordance with a wage agreement, an insurance policy, or a public assistance program. A public entertainment, performance, or social event held to raise funds for a person or cause. Archaic A kindly deed. To be helpful or useful to. To derive benefit: You will benefit from her good example. benefit of the doubt A favorable judgment granted in the absence of full evidence.