bathtub
boat with a bathtub rented to customers (Edo period)
湯船に浸かって温まる。
Warm up by soaking in the bathtub.
疲れた体を湯船でほぐした。
Relaxed tired muscles in the bathtub.
子どもが湯船ではしゃいでいるうちに父親も入ってきた。
While the child was splashing around in the bathtub, the father came in too.