im·pound /ɪmˈpaʊnd/
  (vt.)關在欄中,拘留,充公
  Im·pound v. t. [imp. & p. p. Impounded; p. pr. & vb. n. Impounding.] To shut up or place in an inclosure called a pound; hence, to hold in the custody of some authority such as police or a court; as, to impound stray cattle; to impound an illegally parked car; to impound a document for safe keeping.
  But taken and impounded as a stray,
  The king of Scots.   --Shak.
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  impound
       v 1: take temporary possession of as a security, by legal
            authority; "The FBI seized the drugs"; "The customs
            agents impounded the illegal shipment"; "The police
            confiscated the stolen artwork" [syn: attach, sequester,
             confiscate, seize]
       2: place or shut up in a pound; "pound the cows so they don't
          stray" [syn: pound]