一周 yīzhōu week Origin Definitions Defs Strokes Stroke Words Sentences Sents yīzhōu week 一 yī numeral one one; the number 1; single; alone周 zhōu noun week week; used primarily in writing or formal contexts; usually does not take a measure wordyīzhōu one cycle 一 yī numeral one one; the number 1; single; alone周 zhōu measure word [lap] classifier for revolutions, laps, or cycles