Definitions for "White elephant"
Something requiring much care and expense to maintain and yielding little profit, and often difficult to sell; any burdensome possession.
something that is of little use or profit, especially something that is maintained at great expense. Some in Britain argue that the Falkland Islands, which Britain retained pssession of after a war with Argentina in 1982, are a white elephant, because they cost a huge amount of money to defend, and yet they are very small and have only a tiny population.
albinic Indian elephant; rare and sometimes venerated in east Asia
Any investment that nobody wants because it is unprofitable.
an item that is worthless to one person but priceless to another