gens

n. group of aristocratic Roman families having the same name and descended from a common ancestor on the male side (in ancient Rome); clan with common male ancestor; (Lating) family

In ancient Rome, a gens (pl. gentes) was a clan, caste, or group of families, that shared a common name (the nomen) and a belief in a common ancestor. In the Roman naming convention, the second name was the name of the gens to which the person belonged. The term has also been used to refer to families within a clan system in other contexts, including tribal clans.
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Gens is a free Sega Genesis emulator. It runs on Windows systems (using DirectX), on Linux (using SDL) and on Microsoft's Xbox. Development of Gens began in 1999. As of July 2006, the current version (2.14) advertises full compatibility with 92% of all Genesis games and is considered to be one of the most compatible Genesis emulators available, although its Yamaha YM2612 emulation is far from perfect .
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n. gene, section of a chromosome which transmits a particular hereditary characteristic

n. gens, group of aristocratic Roman families having the same name and descended, from a common ancestor on the male side (in ancient Rome); clan with common male ancestor

n. people, folk, nation

(a.)
A minor subdivision of a tribe, among American aborigines. It includes those who have a common descent, and bear the same totem.
  

(a.)
A clan or family connection, embracing several families of the same stock, who had a common name and certain common religious rites; a subdivision of the Roman curia or tribe.