The Collaborative International Dictionary of English v.0.48:
Phratry \Phra"try\, n.; pl. Phratries. [Gr. ?, ?.] (Gr. Antiq.) A subdivision of a phyle, or tribe, in Athens. [1913 Webster]WordNet (r) 3.0 (2006):
phratry n 1: people descended from a common ancestor; "his family has lived in Massachusetts since the Mayflower" [syn: family, family line, folk, kinfolk, kinsfolk, sept, phratry]