yaoicommon nounSyllable DecompositionyaoiEtymologyexpandfrom Japanese やおい, acronym of ヤマなし、オチなし、意味なし, yama nashi, ochi nashi, imi nashi ('no climax, no resolution, no meaning').Definition1. Subgenre of manga primarily aimed at girls, in which the plot revolves around a homosexual relationship between male characters, and containing sexual scenes. Female fans of yaoi are called fujoshis.BDexpand