noun
rice powder; dusting flour
Flour or starch used to dust work surfaces or dough to prevent sticking, especially in Japanese confectionery and noodle making.
餅をつくとき、取り粉を使うと手にくっつかない。
When pounding mochi, using rice powder keeps it from sticking to your hands.
打ち粉 is also a dusting flour, but often used in noodle making, while 取り粉 is more associated with mochi and confectionery.
Compound of 取り (taking, handling) and 粉 (flour, powder), referring to flour used when handling sticky dough.