Found 2 items, similar to mail boat.
English → English (WordNet) Definition: mail boat mail boat n : a boat for carrying mail [syn: mailboat, packet, packet boat ]
English → English (gcide) Definition: mail boat mailboat \mail"boat`\, mail boat \mail" boat`\n. 1. a boat that carries the mail. Syn: mail boat, packet, packet boat. [WordNet 1.5]