What is the meaning of Objection?

The act of objecting.

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.

An assertion that a question or statement is in violation of the rules of the court.

objection (all meanings)

Source: wiktionary.org