clan

Short definition from Wiktionary

Noun

1. 1
   A group of people all descended from a common ancestor, in fact or belief, especially when the exact genealogies are not known.
2. 2
   A traditional social group of families in the Scottish Highlands having a common hereditary chieftain.
3. 3
   Any group defined by family ties with some sort of political unity.
4. 4
   A group of players who habitually play on the same team in multiplayer games.
5. 5
   A badger colony.