jointer

noun7

1. •
   Any of various tools used to construct or finish joints.
2. •
   The largest kind of plane used by a joiner.
3. •
   A pointing-trowel.
4. •
   A bent piece of iron for riveting two stones together.
5. •
   An equivalent machine, notably used to produce a flat surface on boards.
6. •
   One that joints.
7. •
   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.