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Meaning of clunker

clunk•er

Pronunciation: (klung'kur), [key]
— n. Informal.
  1. something worthless or inferior.
  2. an old, worn-out vehicle or machine, esp. a car.
  3. clunk (def. 4).
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.