also: るざん
noun
Historical term for punishment by sending someone away to a remote place. Modern Japanese more commonly uses 流罪 or 島流し.
流竄は、古い時代の重い刑罰の一つだった。
Banishment was one of the severe punishments in ancient times.
The kanji 流 means 'flow' or 'send away', and 竄 means 'hide' or 'flee', together suggesting being sent into hiding or exile. The exact historical derivation is uncertain.