'Tamil' is one of those words whose origin and root-meaning are wrapped up in mystery. All that we can say at present without any fear of contradiction is, that it is a pure Tamil word being current as the only name of the language of the Tamils, from the days that preceded the First Tamil Academy established at Thenmadurai on the river pahruli in the submerged continent. After some of the Vedic Aryans migrated to the South, Tamil got the descriptive name 'Tenmoli' lit. 'the southern language', in contradistinction to the Vedic language or Sanskrit which was called 'Vadamoli', lit. 'the northern language'. The word 'Tamil' or 'Tamilan' successively changed into 'Dramila', 'Dramila', 'Dramida' and 'Dravida' in North India and at first denoted only the Tamil language, as all the other Dravidian dialects separated themselves from Tamil or came into prominence one by one only after the dawn of the Christian era. That is why Sanskrit and Tamil came to be known as Vadamoi and Tenmoli respectively. This distinction could have arisen only when there were two languages standing side by side, one in the North and the other in the South, both coming in contact with each other. The Buddhist Tamil Academy which flourished in the 5th century at Madurai went by the name of 'Travida Sangam'.