A rōnin (浪人, "drifter" or "wanderer")was a samurai without a lord or master during the feudal period (1185–1868) of Japan. A samurai became masterless upon the death of his master or after the loss of his master's favor or privilege.
The word rōnin literally means "wave man". It is an idiomatic expression for "vagrant" or "wandering man", someone who is without a home. The term originated in the Nara and Heian periods, when it referred to a serf who had fled or deserted his master's land. It then came to be used for a samurai who had no master (hence the term "wave man" illustrating one who is socially adrift).
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