Wordnet 3.0
NOUN (1)
1. 
 group of people related by blood or marriage; 
[syn: kin, kin group, kinship group, kindred, clan, tribe]
WordNet (r) 3.0 (2006):
kin group
    n 1: group of people related by blood or marriage [syn: kin,
         kin group, kinship group, kindred, clan, tribe]