Definition of "onsen" []

• A hot spring in Japan, often with accompanying bathing facilities. (noun)

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• "Actually, I never had a problem in onsen or sento - only the Kobe spa."
• "I once went to a mountain onsen with my brother-in-law Al, a physicist who works in Japan."
• "Warning: a Japanese onsen is a terrific experience, but the cost can mount quickly."