The Collaborative International Dictionary of English v.0.48:

Peculiar \Pe*cul"iar\, n.
   1. That which is peculiar; a sole or exclusive property; a
      prerogative; a characteristic.
      [1913 Webster]

            Revenge is . . . the peculiar of Heaven. --South.
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   2. (Eng. Canon Law) A particular parish or church which is
      exempt from the jurisdiction of the ordinary.
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   Court of Peculiars (Eng. Law), a branch of the Court of
      Arches having cognizance of the affairs of peculiars.
      --Blackstone.

   Dean of peculiars. See under Dean, 1.
      [1913 Webster]