fluting; grooving
Engineering term for cutting grooves or flutes into a surface, such as in metalworking or woodworking.
この機械は金属板の溝削りに使われる。
This machine is used for grooving metal sheets.
Compound of 溝 (mizo, 'groove') and 削り (kezuri, 'shaving, cutting'), literally 'groove cutting'.