In a civil action, the party denying or defending itself against charges brought by a plaintiff In a criminal action, the person indicted for an offense
A defendant is a person who has been accused of breaking the law and is being tried in court. the person in a court of law who has been accused of doing something illegal plaintiff American Equivalent: prisoner
The accused person or party; the person named as the wrong-doer in a civil or criminal action
A person sued in a civil proceeding or accused in a criminal proceeding [Black's Law Dictionary 7th ed 1999]