golden egg

== English == === Etymology === Allusion to “The Goose that Laid the Golden Eggs”, one of Aesop’s Fables. Attested from the 18th century. Compare golden goose, kill the goose that lays the golden eggs. === Noun === golden egg (plural golden eggs) A source of consistent profit or advantage, or the profit gained by such advantage. Used other than figuratively or idiomatically: see golden,‎ egg. === References ===