Definition and meaning of pocket veto: The term pocket veto refers to a situation in which a president, as a means of exercising their power, refuses to sign a bill passed by Congress, preventing the bill from becoming law. The pocket veto is an example of the power of the executive branch, and is an effective way to prevent laws from passing without the president's approval. However, it can be seen as a way that the executive branch can override the authority of Congress and the will of the people.