What is "thenmarachchi"

Thenmarachchi is one of the three historic regions of Jaffna peninsula in northern Sri Lanka. The other two regions are Vadamarachchi and Valikamam. Thenmarachchi is sometimes spelt Thenmarachi, Thenmaraachi or Thenmaraadchi. This area, like the entire Jaffna peninsula, is populated mostly by Tamil people and was for many years under the de facto control of the " Tamil Tigers".