What does "platform" mean?

Additional senses

1. 2.Any flat or horizontal surface; especially, one that is raised above some particular level, as a framework of timber or boards horizontally joined so as to form a roof, or a raised floor, or portion of a floor; a landing; a dais; a stage, for speakers, performers, or workmen; a standing place.
2. 3.A declaration of the principles upon which a person, a sect, or a party proposes to stand; a declared policy or system; as, the Saybrook platform; a political platform. "The platform of Geneva." Hooker.
3. 4.(Naut.) A light deck, usually placed in a section of the hold or over the floor of the magazine. See Orlop. Platform car, a railway car without permanent raised sides or covering; a f -- Platform scale, a weighing machine, with a flat platform on which objects are weighed.
4. 5.To place on a platform. [R.]
5. 6.To form a plan of; to model; to lay out. [Obs.] Church discipline is platformed in the Bible. Milton.