What is Fraternal Insurance?

Legal Definition
The form of life or accident insurance furnished by a fraternal beneficial association, consisting in the undertaking to pay to a member, or his heirs in case of death, a stipulated sum of money, out of funds raised for that purpose by the payment of dues or assessments by all the members of the association.
-- Black's Law Dictionary
Legal Definition
Mutual life, accident and health insurance issued in fraternal orders or societies.
-- Ballentine's Law Dictionary