ゆ つぼ湯 LinksSentence search for つぼ湯Sentence search for つぼゆSentence search for 壺湯Sentence search for 壷湯Kanji details for 湯Edit in JMdict Noun1. small (usu. round) bathtub for a single person (in a bathhouse or hot spring)Other forms壺湯 【つぼゆ】、壷湯 【つぼゆ】 Discussions Log in to talk about this word.