穴あな兄きょう弟だいMeaningsNoun1. men who have had sex with the same woman; hole brothers (Vulgar, Slang)Kanji used穴hole兄older brother弟younger brotherComposed of穴あなhole; opening; orifice; perforation; pit; hollow; cavity; hole (e.g. in the ground); burrow; den; …Noun兄きょう弟だいbrothers and sisters; siblings; half-siblings; step-siblings; siblings by marriage or adoption; mate; friendNoun