اسم و ( noun, abbreviation )
• (1) تعریف: abbreviation of "railroad," a road of parallel steel rails upon which railway cars travel.
• (2) تعریف: abbreviation of "railroad," the entire stock of trains, tracks, manpower, and equipment that constitute a rail transportation system).
اسم و ( noun, abbreviation )
• : تعریف: abbreviation of "rural route," delivery of mail along rural routes, usu. to a roadside mailbox rather than to the door; RD.