Definition
A 'wild-goose chase' is a futile and absurd search for something that is nonexistent or unattainable. It's like chasing after a ghost or searching for a pot of gold at the end of a rainbow. Unlike a genuine quest, which has a real objective, a wild-goose chase is pointless from the start. Think of a group of friends searching for a mythical creature or a detective following a false lead. It suggests a waste of time and energy. It often involves being misled.