1. An item or belonging with no purpose in life other than to sit on a self and collect dust.
2. An item which is used so seldom it does nothing more than collect dust.
John had a large assortment of dust collectors, including everything from trophys to ceramic figurines.
by Woland14 October 09, 2008
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A sex toy you spent too much money on, that you didn't like after you tried, so it sits there collecting dust because you can't sell it.
by Nygmobblepot October 21, 2015
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