knotter
/ˈnɒtər/Definitions
1. noun
A person who ties knots, especially as part of a profession such as a sailor or a climber.
“The sailor was a skilled knotter who could tie any type of knot in seconds.”
2. verb
To tie or fasten with a knot, often in a specific or intricate way.
“She tried to knotter the rope to make a secure anchor.”