jointer

Noun

1. One that joints.
2. Any of various tools used to construct or finish joints, especially:

   1. (woodworking) The largest kind of plane used by a joiner.

   2. (construction) A 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

   Related: ploughshare plowshare moldboard mouldboard coulter colter chisel