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今日は風呂に入る。
I will take a bath today.
A large container filled with water for bathing; a bathtub.
風呂にお湯をためる。
I fill the bathtub with hot water.
The act of bathing; a bath.
風呂に入る。
I take a bath.
Bathroom; bathing area (often including the toilet in Japan).
風呂場はきれいですか?
Is the bathroom clean?
Adding お (o) before 風呂 (e.g., お風呂) makes it polite and natural in conversation.
From Old Japanese *furo₂, possibly related to Proto-Japonic *pu and *ro (water/place). The kanji 風呂 (literally 'wind room') is a ateji (phonetic kanji) with no semantic connection to its components.
風呂 is the most common term for a bathtub or bathing in Japan. In modern usage, it often refers to the entire bathroom area, including the toilet. The polite form is お風呂 (o-furo).