Definition that contains mail car
- poster a horse kept at an inn or post house for use by mail carriers or for rent to travelers
- post-horse a horse kept at an inn or post house for use by mail carriers or for rent to travelers
- pony express express mail carried by relays of riders on horseback; especially between Missouri and California around 1860
- post horse a horse kept at an inn or post house for use by mail carriers or for rent to travelers