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)
source: WordNet 3.0
An authoritative prohibition or negative; a forbidding; an interdiction.
source: Webster 1913
verb
vote against; refuse to endorse; refuse to assent
The President vetoed the bill.
source: WordNet 3.0
command against
I forbid you to call me late at night. Mother vetoed the trip to the chocolate store. Dad nixed our plans.
source: WordNet 3.0
To prohibit; to negative; also, to refuse assent to, as a legislative bill, and thus prevent its enactment; as, to veto an appropriation bill.
