/ ˌspeʃiˈæləti; NAmE / ( BrE ) (also spe·cial·ty NAmE , BrE ) noun ( pl. -ies )
1.
a type of food or product that a restaurant or place is famous for because it is so good :
Seafood is a speciality on the island.
local specialities
2.
an area of work or study that sb gives most of their attention to and knows a lot about; sth that sb is good at :
My speciality is international tax law.
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WORD ORIGIN
late Middle English (denoting the quality of being special or distinctive): from Old French especialite or late Latin specialitas , from Latin specialis , from species appearance, from specere to look.