The word gotra or gotrum means “lineage” in the Sanskrit language. In other words, it is similar to family name.
Gotra system is found among Hindus. But many peoples are confused on gotra system. Now, Scientifically Gotra system is based on Y-Chromosome which is passed from father to son.
Gotra is a division among peoples according to their family linkage or many time it was the place where forefathers belong; and many time is name of forefather. We can also mention gotra system as sub-castes ( means castes with in castes). Like, Gupta is gotra of Baniya(vaishya); Krishnuat is gotra of Yadav caste; Bhatti is Gotra of Rajput caste and so on.