A dead duck - It defines something which is not of any more use and is not guaranteed to be successful, or has not been successful or was not successful. In other words, it is a failure of some kind.
Sample Usage
1. “Kasam Se" soap is a dead duck now. 2. Buying new mobile phones is of no use, dead ducks, instead buy a PDA. 3. This old music system has become a dead duck.
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