What is the meaning of the word "jacob's ladder"?

Definitions:

  1. A genus of flowering plants, named for the arrangement of the plant's leaves, which resemble the rungs of a ladder, known for their clusters of blue or violet flowers, found in temperate regions. copy to clipboard NOUN
    • The Jacob's Ladder plants in the garden added vibrant blue hues to the landscape. copy to clipboard
  2. In maritime terminology, is a type of rope or flexible ladder used on ships, often to allow crew members or passengers to climb up and down the side of the ship. copy to clipboard NOUN
    • The sailor climbed the Jacob's Laddr to board the ship from the small boat below. copy to clipboard
  3. In Physics/Technology, refers to a type of high-voltage electrical device used for demonstrations. copy to clipboard NOUN
    • Jacob's Ladder demonstration in the lab showed the mesmerizing effect of the rising electric arc. copy to clipboard
  4. Refers to a dream of the biblical patriarch Jacob in which he saw a ladder or stairway reaching from earth to heaven with angels ascending and descending from it. copy to clipboard NOUN
    • In Jacob's dream, the ladder symbolizes the connection between Heaven and Earth, with angels moving between the two realms. copy to clipboard
  5. Refers to the vision experienced by the patriarch Jacob in the Book of Genesis. copy to clipboard NOUN
    • Jacob's dream of the ladder to heaven is one of the most famous stories in the Bible, symbolizing the connection between the divine and the human. copy to clipboard