What is "janbiya"

Janbiya, also spelled janbia, jambiya, and jambia ( janbīyah), is the Arabic term for dagger, but it is generally used to describe a specific type of dagger with a short curved blade and a medial ridge. Though the term janbiya is used in various Arab countries and India, it is most closely associated with the people of Najran in Saudi Arabia, and Yemen. It is also prevalent among Muslim men in the Horn of Africa (primarily the Afars of Djibouti). Men typically above the age of 14 wear it as an accessory to their clothing. In Oman the janbiya is commonly referred to as a khanjar.