What is the meaning of mail boat?

noun

WordNet 3.0 © 2006 by Princeton University
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APAWordNet. (2010). mail boat. Retrieved September 20, 2026, from http://smartdefine.org/mail_boat/definitions/1293056
ChicagoWordNet. 2010. "mail boat" http://smartdefine.org/mail_boat/definitions/1293056 (accessed September 20, 2026).
HarvardWordNet 2010, mail boat, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/mail_boat/definitions/1293056>.
MLAWordNet. "mail boat" 23 October 2010. Web. 20 September 2026. <http://smartdefine.org/mail_boat/definitions/1293056>