[ 'vi:təʊ ]
■ noun ( plural ~es ) a constitutional right to reject a decision or proposal made by a law-making body.
↘a ban.
■ verb ( ~es , ~ing , ~ed ) exercise a ~ against.
↘refuse to accept or allow.
Derivatives
~er noun
Origin
C17: from L., lit. 'I forbid', used by Roman tribunes of the people when opposing measures of the Senate.