[ve.to] n, pl vetoes [L, I forbid, fr. vetare to forbid] (1629) 1: an authoritative prohibition: interdiction
2. a: a power of one department or branch of a government to forbid or prohibit finally or provisionally the carrying out of projects attempted by another department; esp: a power vested in a chief executive to prevent permanently or temporarily the enactment of measures passed by a legislature b (1): the exercise of such authority (2): a message communicating the reasons of an executive and esp. the president of the U.S. for vetoing a proposed law
[2]veto vt (1706): to refuse to admit or approve: prohibit; also: to refuse assent to (a legislative bill) so as to prevent enactment or cause reconsideration -- ve.to.er n