WordWeb Online

1. A vote that blocks a decision
    
2. The power or right to prohibit or reject a proposed or intended act (especially the power of a chief executive to reject a bill passed by the legislature)

1. Vote against; refuse to endorse; refuse to assent
   "The President vetoed the bill"
   - blackball, negative
    
2. Command against
   "Mother vetoed the trip to the chocolate store"
   - forbid, prohibit, interdict, proscribe, disallow, nix [N. Amer]

Derived forms: vetoed, vetoing, vetoes

Type of: ballot, balloting, command, contradict, controvert, oppose, power, powerfulness, require, vote, voting

Encyclopedia: Veto Veto, The Royal