资料来源 : Webster's Revised Unabridged Dictionary (1913)

      Peering in maps for ports and piers and roads. --Shak.

      We are in port if we have Thee.             --Keble.

   2. In law and commercial usage, a harbor where vessels are
      admitted to discharge and receive cargoes, from whence
      they depart and where they finish their voyages.

   {Free port}. See under {Free}.

   {Port bar}. (Naut,)
      (a) A boom. See {Boom}, 4, also {Bar}, 3.
      (b) A bar, as of sand, at the mouth of, or in, a port.

   {Port charges} (Com.), charges, as wharfage, etc., to which a
      ship or its cargo is subjected in a harbor.

   {Port of entry}, a harbor where a customhouse is established
      for the legal entry of merchandise.

   {Port toll} (Law), a payment made for the privilege of
      bringing goods into port.

   {Port warden}, the officer in charge of a port; a harbor
      master.

资料来源 : WordNet®

port of entry
     n : a port where customs officials are stationed to oversee the
         entry and exit of people and merchandise [syn: {point of
         entry}]