specialty

Etymology

From Old French specialte, especialte, from Latin specialitas.

noun

1. That in which one specializes; a chosen expertise or talent.
   They cook well overall, but their true specialty is pasta.
   Even men of boundless knowledge, like Humboldt, must have had once their speciality, their pet subject, or they would have, strictly speaking, no knowledge at all. 1858, Charles Kingsley, “My Winter-Garden”, in Fraser’s Magazine, volume 57, page 410
2. A product that originates in and is characteristic of a place.
3. (obsolete) Particularity.
4. A particular or peculiar case.
5. An attribute or quality peculiar to a species.
6. (law) A contract or obligation under seal; a contract by deed; a writing, under seal, given as security for a debt particularly specified.
   1812, Joseph Chitty, A Treatise on Pleading, with a Collection of Practical Precedents, and Notes Thereon, 2nd American edition, edited by Thomas Day, New York, Volume 2, section 456, note c, […] in a plea to an action of debt on specialty, it is still necessary to show that the debt on which the judgment was recovered was a specialty, or to aver that the judgment was recovered before the defendant had notice of the plaintiff’s demand.