An item that is too valuable or expensive to be used for its intended purpose. It is in fact so valuable that it is completely useless.
1: It's raining cats and dogs. Why aren't you using your umbrella?
2: I don't want to ruin it. It's a silk umbrella!
2: I don't want to ruin it. It's a silk umbrella!
by defenseminister December 9, 2010