コイ Meanings Noun Khoi (people); Khoikhoi; Khoi-khoin Words containing コイ コイヘルペスウイルス koi herpes virus コイ族 (コイぞく) Khoi (people) コイ科 (コイか) Cyprinidae (family of freshwater fish) And 1 more. Jinuma: Japanese Dictionary · Word lists