n. & v.
--n. (pl. -oes)
1. a a constitutional right to reject a legislative enactment. b the right of a permanent member of the UN Security Council to reject a resolution. c such a rejection. d an official message conveying this.
2 a prohibition (put one's veto on a proposal).
--v.tr. (-oes, -oed)
1. exercise a veto against (a measure etc.).
2 forbid authoritatively.
Derivatives:
vetoer n.
Etymology: L, I forbid, with ref. to its use by Roman tribunes of the people in opposing measures of the Senate