Positional advantage; power to act effectively: "started his . . . career with far more social leverage than his father had enjoyed\u201d ( Doris Kearns Goodwin). The use of credit or borrowed funds to improve one's speculative capacity and increase the rate of return from an investment, as in buying securities on margin. To improve or enhance: "It makes more sense to be able to leverage what we [public radio stations] do in a more effective way to our listeners\u201d ( Delano Lewis). The action of a lever. The mechanical advantage of a lever. To provide (a company) with leverage. To supplement (money, for example) with leverage.