noun
hurrah!; long life; congratulations; full vent
Archaic or highly literary celebratory exclamation, often used in old texts or set phrases like 万歳. The gloss 'full vent' suggests an extended meaning of giving full expression to something, but this is rare.
古い芝居で「万丈、万丈」と叫ぶ場面がある。
In old plays, there are scenes where they shout 'banjō, banjō!'
「万丈の気炎
The expression 'banjō no kien' means one's spirits are at their highest.