objection

(noun) the act of expressing earnest opposition or protest. Synonyms: expostulation, remonstrance, remonstration.

(noun) the speech act of objecting.

(noun) the act of protesting; a public (often organized) manifestation of dissent. Synonyms: protest, dissent.

(noun) (law) a procedure whereby a party to a suit says that a particular line of questioning or a particular witness or a piece of evidence or other matter is improper and should not be continued and asks the court to rule on its impropriety or illegality.