Definition of Epiphany

A Christian festival, otherwise called the “Manifestation of Christ to the Gentiles,” observed on the 6th of January, in honor of the appearance of the star to the three magi, or wise men, who came to adore the Messiah, and bring presents. It is commonly called “Twelfth Day.”

That's the definition of Epiphany in Black's Law Dictionary 6th Edition. Courtesy of Cekhukum.com.