simple past tense and past participle of discipline
"The teacher disciplined the student for breaking curfew, but she also disciplined herself by studying late into the night to make up for lost time."
obeying the rules
"The military recruits were disciplined during their morning inspection, standing perfectly still until every officer had passed them."
trained mentally or physically by instruction or exercise
"the beautiful coordination of his disciplined muscles"
"a disciplined mind"
Possessing mental discipline.
"Despite her chaotic schedule, she remained disciplined enough to finish all three chapters before dinner."