Definition:
Discipline - Learning that molds character and enforces correct behavior—from a Latin word meaning “instruction” or “training.” To discipline a person or a group means to put them in a state of good order so that they function in the way intended. Discipline, in spite of a popular misconception, is not inherently stern or harsh.
-Walter A. Elwell and Philip Wesley Comfort, Tyndale Bible Dictionary, Tyndale Reference Library (Wheaton, IL: Tyndale House Publishers, 2001), 385.