RhymeZone: knotter definitions

Definitions of knotter:

noun: A person who makes knots.
noun: A machine or device that makes knots.
noun: (pulp and paper) A screen used to remove “knots” or impurities from wood pulp in the process of making paper.
noun: (nautical, in compounds) A vessel capable of reaching a specified speed in knots.
noun: (nautical, in compounds) A wind blowing at a specified velocity in knots.

(Definitions from Wiktionary)