What does the word platform mean?

Usage examples for platform

  1. The guard was running down the platform. – The Soul of the War by Philip Gibbs
  2. Come up to the platform, little girl. – Four Little Blossoms at Oak Hill School by Mabel C. Hawley
  3. There was a small platform, upon which she and Georg were to stand together. – Tarrano the Conqueror by Raymond King Cummings