dead·head /ˈdɛdˌhɛd/
 免票的人;空車;無能力者,庸人


 Dead·head n.
 1. One who receives free tickets for theaters, public conveyances, etc. [Colloq. U. S.]
 2. Naut. A buoy. See under Dead, a.

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 deadhead
      n 1: a nonenterprising person who is not paying his way; "the
           deadheads on the payroll should be eased out as fast as
           possible"
      2: a train or bus or taxi traveling empty