Thayer's Greek Lexicon

 1. lineage running back to some progenitor, ancestry
2. a race or tribe
  1) a group of families, all those who in a given people lay claim
to a common origin
  2) the Israelites which distributed into twelve tribes, descended
from the twelve sons of Jacob, these were divided into families
which were divided into houses
3. family, in a wider sense, nation, people