The word is spelled with a 'c' after the 'i' and ends in '-ine' (Disci-pline).
Discipline means the practice of training people to obey rules or a code of behavior, often using punishment to correct disobedience or the ability to control one’s own behavior, emotions, or desires or a branch of knowledge or learning (e.g., academic discipline) or To train someone to behave in a controlled way, or to punish someone for misconduct.