"Fraternal" means having the characteristics or qualities of a brother or brothers. It often refers to a close or friendly relationship between siblings or people, particularly males, who share similar interests or goals. Full definition
Studies that compare genetically identical twins with fraternal twins — who only share half of their twin's DNA — help distinguish the effects of genes from the effects of shared environmental factors such as housing, schooling and childhood nutrition. (sciencedaily.com)
Women who have a set of fraternal twins as siblings are 2.5 times more likely to have twins than an average woman. (businessinsider.com)
And Patrick Yoes, a national secretary with the 328,000 - member Fraternal Order of Police, praised Lynch's stance toward the mayor. (courant.com)