Women in matrilineal societies are seen as empowered to face the challenges of innovations compared to their counterparts in patrilineal societies. But no matrilineal society, at least in India, can be found where women enjoy absolute authority and power. There is a general notion that all the matrilineal societies are matriarchal as well. But matriliny and matriarchy are not synonymous. Matriarchy implies the dominance of women in decision making. Authority is vested in her, both in theory and in practice. She is the channel not merely for inheritance, but also for succession to positions of authority in the family. But, there are several instances where lineality is not necessarily associated with power. Though the matrilineal system was much more widely distributed in India, the matrilineal communities and the communities bearing matrilineal elements are chiefly found in the north-east and south-west parts of India. The Khasi of Meghalaya is an important tribal group who follow the matrilineal system in the north-east part of India. The Nair of Kerala was a classic example for matrilineal society in south India. Though both the Khasi and the Nair communities fall in the wider category of matrilineal societies they differ widely in its structure, function, and components. Still, a few parallels are observable. Differences are more than similarities. The present study discusses the social systems of the Khasi in detail from both historical and present perspectives. It also tries to understand the role, power, and function of both men and women in a social system where the position of women has been said to be more comfortable due to the matrilineal system.