いの一いち番ばんいのいちばんFreq.FrequencyTop 100,000Meanings1expressionfirst of all; first thingEmphasizes doing something before anything else; often used in spoken Japanese.いの一いち番ばんに宿しゅく題だいを終おわらせよう。Let's finish our homework first of all.朝あさ起おきたら、いの一いち番ばんに顔かお