What does the word weightless mean?

Usage examples for weightless

  1. If the ray simply nullified gravity, the buildings down there, while weightless, would not rise as they did. – Lords of the Stratosphere by Arthur J. Burks
  2. It was intolerable- and ten times worse because they had been weightless so long and were still shaken and sore and bruised from the air- graze only minutes back. – Space Tug by Murray Leinster
  3. But of course I haven't tried it weightless. – Space Platform by Murray Leinster