Onan is a male name of Hebrew origin, meaning "Strength, Power." In the Book of Genesis, Onan was the second son of Judah and was involved in a levirate marriage with his brother's widow, Tamar. However, he disobeyed the custom by practicing coitus interruptus, leading to his death as a result of divine displeasure. The biblical narrative has been subject to various interpretations, with early Christian and Roman Catholic views emphasizing procreation and condemning non-procreational sexual acts. The term "onanism" has come to refer to masturbation in modern languages, although it is not directly based on the biblical story itself. Despite differing interpretations, the name Onan signifies strength and power, reflecting the character's role in biblical history.