Easton's Bible Dictionary: M. G. Easton, M.A., D.D.
Tribe
A collection of families descending from one ancestor. The "twelve tribes" of the Hebrews were the twelve collections of families which sprang from the sons of Jacob. In Mt. 24:30 the word has a wider significance. The tribes of Israel are referred to as types of the spiritual family of God (Rev. 7).
Original from The Bible Foundation - bf.org. They claim public domain status for their original text.