What is another word for bottle screw?
Pronunciation: [bˈɒtə͡l skɹˈuː] (IPA) 
Bottle screw is a term that refers to a type of tensioning device used on sailboats and other types of vessels. It consists of a screw-like mechanism that can be tightened to adjust the tension on cables, ropes, wires, or similar materials. The bottle screw is also sometimes referred to as a turnbuckle. Other synonyms for the term include tensioning screw, adjuster screw, barrel screw, and rigging screw. Regardless of the term used, the bottle screw remains an essential component in many maritime activities and is incredibly useful for adjusting and maintaining safety on board a vessel.
