The Collaborative International Dictionary of English v.0.48:

Specialty \Spe"cial*ty\, n.; pl. Specialties. [F.
   sp['e]cialit['e]. Cf. Speciality.]
   1. Particularity.
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            Specialty of rule hath been neglected. --Shak.
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   2. A particular or peculiar case. [Obs.]
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   3. (Law) A contract or obligation under seal; a contract by
      deed; a writing, under seal, given as security for a debt
      particularly specified. --Chitty. --Bouvier. --Wharton
      (Law Dict.).
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            Let specialties be therefore drawn between us.
                                                  --Shak.
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   4. That for which a person is distinguished, in which he is
      specially versed, or which he makes an object of special
      attention; a speciality.
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            Men of boundless knowledge, like Humbold, must have
            had once their specialty, their pet subject. --C.
                                                  Kingsley.
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