What does "chasten" mean?

Chasten: 2. To purify from errors or faults; to refine. They [classics] chasten and enlarge the mind, and excite to noble actions. Layard. To Chasten, Punish, Chastise. To chasten is to subject to affliction or trouble, in order to produce a general change for the better in life or character. To punish is to inflict penalty for violation of law, disobedience to authority, or intentional wrongdoing. To chastise is to punish a particular offense, as with stripes, especially with the hope that suffering or disgrace may prevent a repetition of faults.