こいこいこいこいMeanings1nounkoi-koi; a hanafuda gamehanafudaA two-player hanafuda game where players call 'koi-koi' to continue the round and aim for higher-scoring combinations.See also: 花札正しょう月がつに家か族ぞくでこいこいをして遊あそんだ。We played koi-koi as a family during the New Year holidays.
