一根筋 yīgēnjīn stubborn Origin Definitions Defs Strokes Stroke Words Sentences Sents 一 yī numeral one one; the number 1; single; alone根 gēn measure word [long/slender] measure word for long, thin, or slender objects like sticks, cigarettes, or strings筋 jīn adjective tendon tendon; sinew; ligament