Japanese wheel mortar


What is the Japanese word for a wheel mortar? This is a mortar that is shaped
like a boat or a trough, and a wheel with a hole in it through which there is
a wooden axle. The operator pushes the wheel back and forth in the trough to
grind the material. It is used traditionally used to grind pharmaceuticals,
herbs and food ingredients. It looks kind of like this:

[![herb
grinder](https://i.stack.imgur.com/SVxylm.jpg)](https://i.stack.imgur.com/SVxylm.jpg)




That is [薬研{やげん}](https://ja.wikipedia.org/wiki/%E8%96%AC%E7%A0%94) in
Japanese.

By the way, I've heard of
[薬研堀{やげんぼり}](https://ja.wikipedia.org/wiki/%E8%96%AC%E7%A0%94%E5%A0%80) but
never known 薬研 itself.




That is [薬研{やげん}](https://ja.wikipedia.org/wiki/%E8%96%AC%E7%A0%94) in
Japanese.

By the way, I've heard of
[薬研堀{やげんぼり}](https://ja.wikipedia.org/wiki/%E8%96%AC%E7%A0%94%E5%A0%80) but
never known 薬研 itself.

