(anatomy) toe

to find fault

(Japanese mythology, Shinto) the realm of mortals, i.e. Japan itself (as opposed to the realm of the gods and the realm of the dead)

to stamp one's feet / to make no progress

(informal) "octopus leg wiring": electrical setup involving multiple devices attached to one outlet, hence cluttered and carrying the risk of overloading

補聴器: hearing aid - a device used to help the hard of hearing hear sounds better.

信号機: a traffic light / 信号旗: a signal flag

合意書: contract

代数幾何学: algebraic geometry

大山椒魚: a Japanese giant salamander