1. (noun)discipline, subject, subject area, subject field, field, field of study, study, bailiwick a branch of knowledge "in what discipline is his doctorate?"; "teachers should be well trained in their subject"; "anthropology is the study of human beings"
2. (noun)discipline a system of rules of conduct or method of practice "he quickly learned the discipline of prison routine"; "for such a plan to work requires discipline";
3. (noun)discipline the trait of beingwell behaved
"he insisted on discipline among the troops"
5. (noun)discipline, correction the act of punishing
"the offenders deserved the harsh discipline they received"
6. (verb)discipline, train, check, condition develop (children's) behavior by instruction and practice; especially to teachself-control "Parents must discipline their children"; "Is this dog trained?"
7. (verb)discipline, correct, sort out punish in order to gaincontrol or enforce obedience "The teacher disciplined the pupils rather frequently"