Meaning of DISCIPLINE in English

DISCIPLINE

(TRAINING) [noun] [U] - training which produces obedience or self-control, often in the form of rules and punishments if these are broken, or the obedience or self-control produced by this trainingparental/prison/school disciplineGood teachers know that children need and enjoy firm discipline.The army was criticized for its harsh discipline.Studying a foreign language is a good discipline for the mind.If someone or a group of people have (good) discipline, they are in control of themselves or other people, even in difficult situations.The soldiers' discipline (= calm self-control) was remarkable.Maintaining classroom discipline (= control of the students) is the first task of every teacher.

Cambridge English vocab.      Кембриджский английский словарь.