noun
wooden pestle; surikogi
A wooden pestle used with a Japanese grinding bowl (すり鉢) to grind sesame seeds, miso, or other ingredients. The word is usually written in kana.
すりこ木ですり鉢でごまをする。
I grind sesame seeds in a suribachi with a surikogi.
すりこ木は木製の調理器具です。
A surikogi is a wooden cooking utensil.
Compound of 擂り (suri, 'grinding', from 擂る) + 粉 (ko, 'powder') + 木 (ki, 'wood'), with rendaku voicing of き to ぎ. The exact historical derivation is uncertain, but the word refers to a wooden stick for grinding into powder.