Approval, or permission to proceed.
A go-ahead to commit a crime, specifically to carry out a hit on someone (i.e. to kill).
A traffic light in its green state (indicating that vehicles may proceed).
An approval, by an authority, generally one that makes something valid.
A penalty, punishment, or some coercive measure, intended to ensure compliance; especially one adopted by several nations, or by an international body.
A law, treaty, or contract, or a clause within a law, treaty, or contract, specifying any of the above.
To penalize (a state etc.) with sanctions.
To ratify; to make valid.
To give official authorization or approval to; to countenance.