Clan \Clan\ (kl[a^]n), n. [Gael. clann offspring, descendants; akin to Ir. clann, cland, offspring, tribe, family; perh. from L. plania scion, slip, cutting. Cf. {Plant}, n.] 1. 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. ``I have marshaled my clan.'' --Campbell. [1913 Webster] 2. A clique; a sect, society, or body of persons; esp., a body of persons united by some common interest or pursuit; -- sometimes used contemptuously. [1913 Webster] Partidge and the rest of his clan may hoot me. --Smolett. [1913 Webster] The whole clan of the enlightened among us. --Burke. [1913 Webster]