纹丝 (紋絲) wénsī

wénsī noun tiny bit; a jot; whisker
Domain: Modern Chinese 现代汉语
Notes: (CC-CEDICT '紋絲')

Contained in

• 纹丝不动(紋絲不動) to not move a single jot
• 纹丝儿(紋絲兒) a tiny bit