Speaking in Myths project explores the fascinating myths and legends behind English idiomatic expressions of mythological origin.. This episode of the project tells a mythical tale in which a wronged young woman managed to turn many people against one another, exploiting their vanity and pride, and this conflict eventually led to an all-out confrontation. You will learn the meaning and origin of the English idiom 'apple of discord', as well as how it is used in modern English speech.