The term Dravida has been found in many contexts across language, people, architecture, politics, culture etc. While I find various material in various contexts, I am not able to find out the answer as when the word itself was first used and in what context.
Kindly help with scholarly citations.
When was the term "Dravida" first used and what is the context with which it was presented?
 my current effort on the topic is to locate/collate translations by different scholarly authors of the book "Tantravarttika".
Any answers/pointers answering/help answering the question [or] Soundarya Lahari sloka [or] other texts including the term, Preferably on varietal subjects is welcome.