Veto does not mean to accept. Veto means one rejects the idea completely.
veto
yes
Only the president may veto a bill and if he does it is not passed, however if the bill can get 2/3 of congress to vote yes to the bill then it may be passed. Usually though if a bill is vetoed it is not passed.
Yes, the same as how the president may veto a bill.
Yes, the plural form for the noun veto is vetoes.
A "veto" is used to prevent a law from becoming fully enacted.
Yes the president who makes up the legislate branch can veto.
"veto" means 'I forbid', which is exactly how the term is used in international politics.
yes
yes
yes it is.
Yes, that is the purpose and function of the Veto Power.