The most perfect, who have their passions in the best discipline, are yet obliged to be constantly on their guard.
Rogers.
4. Severe training, corrective of faults; instruction by means of misfortune, suffering, punishment, etc.
A sharp discipline of half a century had sufficed to educate us.
Macaulay.
5. Correction; chastisement; punishment inflicted by way of correction and training.
Giving her the discipline of the strap.
Addison.