Definitions

1. noun

a vote or decision by a person or body with the power to reject or cancel a proposal or plan

“The president used his veto power to block the new tax bill.”

2. verb

to reject or cancel (a proposal or plan) formally

“The government was forced to veto the deal due to concerns over its legality.”

3. verb

to refuse to agree with or to support something

“She vetoed the idea of going to the movies tonight.”