THRESHOLD

Definition of THRESHOLD

  1. (noun)the starting point for a new state or experience
  2. (noun)the smallest detectable sensation
  3. (noun)the entrance (the space in a wall) through which you enter or leave a room or building; the space that a door can close
  4. (noun)the sill of a door; a horizontal piece of wood or stone that forms the bottom of a doorway and offers support when passing through a doorway
  5. (noun)a region marking a boundary