noun
Refers to heated water, often contrasted with 水 (cold water). Used in cooking, bathing, and general contexts.
See also: 水 (みず)
お湯を沸かしてコーヒーを入れましょう。
Let's boil some hot water and make coffee.
この薬はお湯で飲んでください。
Please take this medicine with hot water.
noun
Often refers to a hot bath at home, a public bath (銭湯), or a hot spring (温泉). The honorific prefix お is frequently added.
疲れたから、お湯にゆっくり浸かりたい。
I'm tired, so I want to soak in a hot bath for a while.
この旅館の湯はとても気持ちがいい。
The hot spring at this inn feels really good.
noun
Technical use in metalworking and foundry contexts. Not an everyday meaning.
溶鉱炉から湯が流れ出る。
Molten iron flows out from the blast furnace.