Synonym of 砂糖大根 (satō daikon)

flat / solid / board / plank / wooden board

use one thing for many purposes / work someone hard

to use one's head

beatbox

Eurobeat

(music) etude

voluntary practice by oneself (as opposed to mandatory group practice)

(education) workbook

a flat ritual baton or scepter of Chinese origin. Usually made of woods like Japanese yew, holly, cherry, sakaki, (Japanese cedar,) the shaku is often seen in portraits of shoguns and noblemen, but is now used mostly by Shinto priests