jointer

plural jointers

1. literallyOne that joints.
2. Any of various tools used to construct or finish joints, especially:
   1. artsThe largest kind of plane used by a joiner.
   2. businessA pointing-trowel.
   3. A bent piece of iron for riveting two stones together.
3. An equivalent machine, notably used to produce a flat surface on boards.
4. A part of some ploughs, near the coulter, that helps control the flow of stubble and trash, better ensuring that it gets buried when the moldboard turns the soil over.

   Holonyms: plough, plow < implement