Definition of disciplinarian

• a. - Pertaining to discipline.
• n. - One who disciplines; one who excels in training, especially with training, especially with regard to order and obedience; one who enforces rigid discipline; a stickler for the observance of rules and methods of training; as, he is a better disciplinarian than scholar.
• n. - A Puritan or Presbyterian; -- because of rigid adherence to religious or church discipline.