Mahabharata 6.10.57

द्रविडाः केरलाः प्राच्या भूषिका वनवासिनःउन्नत्यका माहिषका विकल्पा मूषकास्तथा

draviḍāḥ keralāḥ prācyā bhūṣikā vanavāsinaḥunnatyakā māhiṣakā vikalpā mūṣakāstathā

Our plain-language meaning of this verse is waiting for scholar review.