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).
A statement expressing opposition, or a reason or cause for expressing opposition (generally followed by the adposition to).
An official protest raised in a court of law during a legal trial over a violation of the rules of the court by the opposing party.
The act of objecting.
An assertion that a question or statement is in violation of the rules of the court.