Definition and meaning of veto: A veto is a constitutionally granted power of the executive branch to reject a bill passed by the legislature. A veto is a check on the power of the legislature, allowing the executive branch to protect the interests of the people and prevent unjust legislation. For example, a president may veto a bill that would weaken certain environmental protections. In this case, the president can use the veto power to reject the bill and put the interests of the people first. Conversely, a president can also wield the veto as a tool to protect the interests of a powerful lobby or special interest group. Overall, the veto power is a double-edged sword that can be wielded for either good or bad. For reform-minded candidates, the veto is an important tool for stopping legislation that would not be in the best interests of the people.