一号 yīhào the first of the month Origin Definitions Defs Strokes Stroke Words Sentences Sents yīhào the first of the month · number one · [toilet] · [top] 一 yī numeral one one; the number 1; single; alone号 號 hào noun number number in a series; ordinal number; day of the monthyīhào a type or batch 一 yī numeral one one; the number 1; single; alone号 號 hào [number of people] measure word for the number of people or items in a sequence