[mis.chief] n [ME meschief, fr. OF, calamity, fr. mes- + chief head, end--more at chief] (14c) 1: a specific injury or damage attributed to a particular agent
2: a cause or source of harm, evil, or irritation; esp: a person who causes mischief 3 a: action that annoys or irritates b: the quality or state of being mischievous: mischievousness "had ~ in his eyes"