The Collaborative International Dictionary of English v.0.48:

Speciality \Spe`ci*al"i*ty\, n.; pl. Specialities. [See
   Special, and Specialty.]
   1. A particular or peculiar case; a particularity. --Sir M.
      Hale.
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   2. (Law) See Specialty, 3.
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   3. The special or peculiar mark or characteristic of a person
      or thing; that for which a person is specially
      distinguished; an object of special attention; a special
      occupation or object of attention; a specialty.
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            On these two general heads all other specialities
            are depedent.                         --Hooker.
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            Strive, while improving your one talent, to enrich
            your whole capital as a man. It is in this way that
            you escape from the wretched narrow-mindedness which
            is the characteristic of every one who cultivates
            his speciality.                       --Ld. Lytton.
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            We 'll say, instead, the inconsequent creature man,

            For that'a his speciality.            --Mrs.
                                                  Browning.
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            Think of this, sir, . . . remote from the impulses
            of passion, and apart from the specialities -- if I
            may use that strong remark -- of prejudice.
                                                  --Dickens.
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   4. An attribute or quality peculiar to a species.
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