Definition of "mail train" []

• A train used by the postal service to transport mail, and in some cases, to sort mail en route. (noun)

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• "Luke refused to spend that Saturday night at the Imperial, for the branch-line train to Goondiwindi left only once a week, on Saturday night, to connect with the Goondiwindi — Brisbane mail train on Sunday."
• "Phineas left London by a night mail train on Easter Sunday, and found himself at the Willingford Bull about half an hour after midnight."