endogamous

noun

1. marriage within a specific tribe or similar social unit.Compare exogamy(def 1).

noun

1. anthropol marriage within one’s own tribe or similar unitCompare exogamy (def. 1)
2. pollination between two flowers on the same plant

n.

1. Reproduction by the fusion of gametes of similar ancestry.
2. Marriage within a particular group in accordance with custom or law.