わ沸waかすkasu
1.
To heat a liquid, such as water, to the point of boiling or bringing it to a high temperature, often in preparation for cooking or bathing.
2.
To stir excitement or enthusiasm in a group of people, causing them to become highly engaged or animated.
3.
To apply heat to a metal or substance to the point of melting it into a liquid form.
4.
To cause fermentation in a liquid, typically in the context of making alcohol or other fermented products.
Example:
ジェシーはコーヒーを入れる為にお湯を沸かしている。