Easter eggs are specially decorated eggs given to celebrate the Easter holiday or springtime. The oldest tradition is to use dyed and painted chicken eggs, but a modern custom is to substitute chocolate eggs, or plastic eggs filled with confectionery such as jellybeans. These eggsare often hidden, supposedly by the Easter Bunny, for children to find on Easter morning.
Also Easter egg (Media)
A virtual Easter egg is an intentional hidden message or feature in an object such as a movie, book, CD, DVD, computer program, or video game. The term draws a parallel with the custom of the Easter egg hunt observed in many western nations.