specialty

noun (plural specialties)

• 1a pursuit, area of study, or skill to which someone has devoted much time and effort and in which they are expert:his specialty was watercolors
• a particular branch of medicine or surgery.
• a product, especially a type of food, that a person or region is famous for making well:the local specialties are all seafood
• [as modifier] meeting particular tastes or needs:specialty potatoes for salads

• 2 Law a contract under seal.