1. 邮艇：mail-steamer邮船 | mailboat邮艇 | mailinglists邮寄名单

2. 邮政便船：mailboat 邮艇 | mailboat 邮政便船 | mailbox 信箱

3. 邮船：mailandluggagevan邮政行李车 | mailboat邮船 | mailcarriage邮政车

noun

1. a boat for carrying mail

Synonym: mail boatpacketpacket boat