穴あな兄きょう弟だいあなきょうだいMeanings1nounmen who have had sex with the same woman; hole brothersvulgar expression or wordslang›Vulgar slang used among men to refer to other men who have slept with the same woman. The literal meaning is 'hole brothers'. Compare with 竿姉妹 (women who have slept with the same man).See also: 竿姉妹
