Definition: A heavy object attached to a cable or chain and used to moor a ship to the sea bottom.
According to some, this is the only Latin nautical term to make it into Germanic languages (including English!)
Unless you are a pirate or a boat, you might be more likely to use this word in everyday conversation if you were to describe a person or thing that provides stability or confidence in an uncertain situation.
Or maybe a thing that keeps you grounded, while you explore an alternative?
More about this is coming. Like winter.
Update: Learn about anchoring bias.