thread·bare /ˈθrɛdˌbær, ˌbɛr/
 (a.)毛絨已磨掉而露線的


 Thread·bare a.
 1. Worn to the naked thread; having the nap worn off; threadbare clothes. “A threadbare cope.”
 2. Fig.: Worn out; as, a threadbare subject; stale topics and threadbare quotations.

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 threadbare
      adj 1: repeated too often; overfamiliar through overuse; "bromidic
             sermons"; "his remarks were trite and commonplace";
             "hackneyed phrases"; "a stock answer"; "repeating
             threadbare jokes"; "parroting some timeworn axiom";
             "the trite metaphor `hard as nails'" [syn: banal, commonplace,
              hackneyed, old-hat, shopworn, stock(a), timeworn,
              tired, trite, well-worn]
      2: having the nap worn away so that the threads show through;
         "threadbare rugs"