Kerf
The wood removed by a saw blade between the piece you keep and your offcut. The thickness of a saw blade; also the cut made by that blade
Kick Back
Kick back occurs when a tool such as a table saw throws the work-piece back towards the operator. It can happen because the timber pinches the blade or the person feeding the timber moves it in the wrong direction. Most tools these days are fitted with anti kickback devices.
Kickback
A highly dangerous situation in which a spinning blade snags a workpiece and hurls it back at the operator at high velocity
Kiln
A heated container or small building used to dry lumber
Kiln-Dried Lumber
Lumber that has been dried in a kiln, often to a moisture contend of 6%-12%
Knockdown
A piece that can be disassembled quickly
Knot
Defect in lumber created where a branch was attached to the tree