mail consisting of large numbers of identical items (circulars or advertisements) sent to individual addresses at less than 1st-class rates and paid for in one lot
the bags of letters and packages that are transported by the postal service
stick out or up
the system whereby messages are transmitted via the post office
the property of something that is great in magnitude
a conveyance that transports the letters and packages that are conveyed by the postal system
the property possessed by a large mass
