Answer: Gotra
Notes: In Hindu culture, the word Gotra is considered synonymous with lineage. It broadly refers to individuals who are common male ancestors or descendants of the unbroken male line from the patriline. Generally, a tribe forms an exogamous unit, in which case marriage is considered and is forbidden by custom. The tribe name may be used as a surname, but it is different from the surname and is strictly maintained due to its importance in intermarriage between Hindus, especially castes.
