What is the meaning of the word "waist anchor"?

Definitions:

  1. A type of anchor stored or mounted at the waist or middle section of a ship. copy to clipboard NOUN
    • The sailors secured the waist anchor as the ship approached shallow waters. copy to clipboard
  2. Spare anchor for use in emergency. copy to clipboard NOUN
    • During the storm, the crew prepared the waist anchor as a precaution in case the main anchor failed. copy to clipboard

Synonyms: