flour; dusting flour
Specifically flour used to dust a work surface or dough to prevent sticking, especially in noodle-making or baking.
When making udon, we use plenty of dusting flour.
powder; dusting powder
General powder used for polishing, dusting, or applying to surfaces, such as talcum powder or polishing powder.
At the end, apply powder to bring out the shine.
talcum powder
Standard kanji spelling.
Variant spelling without okurigana.
Search-only form; not a standard spelling.
Compound of 打ち (uchi, 'striking' or 'sprinkling') + 粉 (ko, 'powder'). The term refers to powder that is sprinkled or dusted onto something.