200. The "Hemp" Radical: 麻
See essay 1829 on 麻 (hemp; "hemp" radical) to learn about this shape. Although it doesn't serve as a radical in any Joyo kanji besides 麻 itself, it's a component in a few Joyo characters, enabling us to polish (磨: 1831) things gently or chafe (摩: 1830) them roughly.