In its most general sense, discipline refers to systematic instruction given to a disciple. This sense also preserves the origin of the word, which is Latin disciplina, "instruction."To discipline thus means to instruct a person or animal to follow a particular code of conduct, or to adhere to a certain "order," or to adopt a particular pattern of behaviour. So for example, to discipline a child to wash its hands before meals. Here, 'washing hands before meals' is a particular pattern of behaviour, and the child is being disciplined to adopt that pattern. 'To disciple' also gives rise to the word disciplinarian, which denotes a person who enforces order. An ideal disciplinarian is one who can enforce order without coercion. Usually however, the phrase 'to discipline' carries a negative connotation. This is because enforcement of order - that is, ensuring instructions are carried out - is often regulated through punishment.To be disciplined is then, subject to context, either a virtue (
Source:
http://en.wikipedia.org/wiki/Discipline