A possession that is useless or troublesome, especially one that is expensive to maintain or difficult to dispose of. Origin: from the story that the kings of Siam gave such animals as a gift to courtiers they disliked, in order to ruin the recipient by the great expense incurred in maintaining the animal
expensive investment that turns out to be useless and cannot be gotten rid of; object which is not needed, unnecessary item; species of elephant that is abnormally light
disapproval If you describe something as a white elephant, you mean that it is a waste of money because it is completely useless. The pavilion has become a £14 million steel and glass white elephant. something that is completely useless, although it may have cost a lot of money (From the supposed practice of the King of Siam, who gave to people he did not like a white elephant, which cost a very large amount of money to keep)