Bursa -
Any of the many small fluid-filled sacs located at the point where a muscle or tendonslides across bone. These sacs serve to reduce friction between the two moving surfaces.
Wikipedia
Bursa is a city in northwestern Turkey and the seat of Bursa Province. With a population of 1,854,634 (2009), it is Turkey's fourth largest city, as well as one of the most industrialized and culturally charged metropolitan centers in the country. Bursa is settled on the northwestern slopes of Mount Uludağ in the southern Marmara Region.