Demurrer Common

(law) a formal objection to an opponent's pleadings

(law) any pleading that attacks the legal sufficiency of the opponent's pleadings

a defendant's answer or plea denying the truth of the charges against him

"he gave evidence for the defense"

A motion by a party to an action, for the immediate or summary judgment of the court on the question, whether, assuming the truth of the matter alleged by the opposite party, it is sufficient in law to sustain the action or defense, and hence whether the party resting is bound to answer or proceed further.

Someone who demurs.