Sorkalilirunthu Naam / ??????????????? ????

This book is a kind od thesaurus for the words used in  Tamil Sangam Literature works.

example- It is customary to refer to two as the mother in internal mantras. The mother who gave birth to one. Internal literatures refer to him as நற்றாய் (நல் + தாய்). Generally referred to as the mother it refers to the receiving mother and the nurse who specially nurtures the head.