D defs.my
Entry 4 senses Webster, 1913

Specialty

/spĕsh'-əl-tē/ · Spe·cial·ty · IPA /ˈspɛʃ.əl.ti/
01 n. Particularity.
pl. Specialties ((#))
  1. 1.
    Particularity.
    Specialty of rule hath been neglected.” Shak.
  2. 2.
    A particular or peculiar case.[Obs.]
  3. 3.
    A contract or obligation under seal; a contract by deed; a writing, under seal, given as security for a debt particularly specified.(Law)
    “Let specialties be therefore drawn between us.” Shak.
  4. 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.
    “Men of boundless knowledge, like Humbold, must have had once their specialty, their pet subject.” — C. Kingsley.