Where does “banujo” come from?

banujo (Esperanto) comes from Esperanto bani, from French baigner, from Old French baignier, from Vulgar Latin baneare, from Latin balneāre, from Latin balneum, from Ancient Greek βαλανεῖον, from Ancient Greek βᾰλᾰνεύς — bath-man.

banujo (Esperanto): bathtub

Definitions

bathtub

Ancestry of “banujo”, step by step

Step	Language	Word	Meaning
1	Esperanto	bani	to bathe
2	French	baigner	to bathe; to go for a swim
3	Old French	baignier	to bathe; to take a bath; to bathe oneself
4	Vulgar Latin	baneare	to bathe oneself
5	Latin	balneāre	—
6	Latin	balneum	bath, bathing place, bathroom
7	Ancient Greek	βαλανεῖον	bath, bathing room; bathhouse
8	Ancient Greek	βᾰλᾰνεύς	bath-man

Every word from Ancient Greek βᾰλᾰνεύς →Every word from Ancient Greek βαλανεῖον →Every word from Latin balneum →