an asset of special worth or utility
"cooking is his forte"
a distinguishing trait
"Her quick wit and ability to calm angry customers are her true specialties."
the special line of work you have adopted as your career
"his specialization is gastroenterology"
That in which one specializes; a chosen expertise or talent.
"After years of studying marine biology, she decided to make coral reef conservation her specialty."
In plain English: A specialty is something you are especially good at or that interests you more than other things.
"Italian food is my family's specialty at this restaurant."
Usage: Use specialty to refer to a specific field of work, skill, or product that someone is particularly good at or focuses on. It often functions as an uncountable noun when describing general areas of interest but can be pluralized (the restaurant's specialties) to list distinct items within those fields.
The word specialty comes from the Latin specialitas, which passed through Old French and entered Middle English as specialte. It originally referred to a particular quality or distinction before evolving into its current meaning of a specific field of expertise.