郵ゆう船せんゆうせんFreq.FrequencyTop 100,000Meanings1nounmail boat; mail shipRefers to a ship that carries mail, often used in historical or company names (e.g., 日本郵船).日本にっぽん郵ゆう船せんは大おお手ての海かい運うん会社がいしゃです。Nippon Yusen is a major shipping company.