Answer:

WHITEELEPHANT

AnswerCrossword Clue
WHITEELEPHANTCandidate for the rummage sale.
WHITEELEPHANTBeast of much burden
WHITEELEPHANTCommon U.S. animal
WHITEELEPHANTGarage-sale item
WHITEELEPHANTUseless but costly object
WHITEELEPHANTPlastered pachyderm?
WHITEELEPHANTUnwanted possession
WHITEELEPHANTUnprized possession
WHITEELEPHANTBurdensome possession
WHITEELEPHANTMany a yard sale item
WHITEELEPHANTIt's hard to get rid of
WHITEELEPHANTBurdensome herbivorous mammal?
WHITEELEPHANTSomething relegated to the attic
WHITEELEPHANTIt could be found in the attic
WHITEELEPHANTIt's often found in the attic