Definition & Meaning of "jointer"

What is a "jointer"?

A jointer is a woodworking tool used to create flat, smooth surfaces on wood, especially for the edges of boards. It has a long, flat table with a rotating cutter head that shaves off small amounts of wood as the board is passed over it. Jointers are commonly used to ensure that wood edges are straight and square, which is essential for creating joints between pieces of wood in furniture or cabinetry. They are typically used in the early stages of woodworking to prepare rough lumber for further processing.