What does the word disk mean?

Usage examples for disk

  1. Mrs. Daggett hurried forward to meet Mrs. Solomon Black, who was advancing with slow majesty, bearing a huge disk covered with tissue paper. – An Alabaster Box by Mary E. Wilkins Freeman and Florence Morse Kingsley
  2. And on the screen the face of the left hand disk of the Mancji ship was lit momentarily by a brilliant spark of yellow, then another. – Greylorn by John Keith Laumer
  3. There was a vertical line across the side of the lighted disk. – Sand Doom by William Fitzgerald Jenkins