Princeton's WordNet

1. kin, kin group, kinship group, kindred, clan, tribe(noun)

   group of people related by blood or marriage

Wiktionary

1. clan(Noun)

   A group of people all descended from a common ancestor, in fact or belief.

2. clan(Noun)

   A traditional social group of families in the Scottish Highlands having a common hereditary chieftain

3. clan(Noun)

   Any association of people behaving clannishly.

4. clan(Noun)

   A group of players who habitually play on the same team in multiplayer games.

Origin: From clann, from cland, from plant, from planta.

Webster Dictionary

1. Clan(noun)

   a tribe or collection of families, united under a chieftain, regarded as having the same common ancestor, and bearing the same surname; as, the clan of Macdonald

2. Clan(noun)

   a clique; a sect, society, or body of persons; esp., a body of persons united by some common interest or pursuit; -- sometimes used contemptuously

The Nuttall Encyclopedia

1. Clan

   a tribe of blood relations descended from a common ancestor, ranged under a chief in direct descent from him, and having a common surname, as in the Highlands of Scotland; at bottom a military organisation for defensive and predatory purposes.

• stamAfrikaans
• عَشيرَه، قَبيلَهArabic
• кланBulgarian
• clãPortuguese (BR)
• klan, rodCzech
• die SippeGerman
• klanDanish
• φάρα, φατρίαGreek
• clanSpanish
• klannEstonian
• خاندان؛ طایفهFarsi
• klaaniFinnish
• clanFrench
• שֶׁבֶטHebrew
• जातिHindi
• klan, rodCroatian
• klánHungarian
• klan, margaIndonesian
• ættflokkasamtökIcelandic
• clanItalian
• 一族Japanese
• 씨족Korean
• klanasLithuanian
• klans;ģintsLatvian
• suku kaumMalay
• clanDutch
• klan,ætt, stammeNorwegian
• klanPolish
• خاندان؛ طایفهPersian
• خاندانPashto
• clAPortuguese
• clanRomanian
• клан; родRussian
• klanSlovak
• pleme, rodbinaSlovenian
• klanSerbian
• klanSwedish
• เผ่า; ตระกูลThai
• kabile, klanTurkish
• 蘇格蘭高地人的氏族，部族Chinese (Trad.)
• клан, рідUkrainian
• قبیلہ ، نسلUrdu
• thị tộcVietnamese
• 苏格兰高地人的氏族，部族Chinese (Simp.)