Kreide

noun
  1. The German word for 'chalk', a soft, white, porous sedimentary rock, a form of limestone composed of the mineral calcite. It is commonly used for writing on blackboards or as a drawing material. noun
    The teacher used Kreide to write the lesson on the blackboard.
    Artists often use Kreide for sketching due to its smooth texture.
  2. In a broader geological context, 'Kreide' refers to the Cretaceous period, a geological era known for its chalk deposits. noun
    The Kreide period is known for the extinction of the dinosaurs.
    Geologists study Kreide deposits to understand Earth's history.