Which of the following is NOT a defect typically found in wood?

Pit holes are not typically considered a defect found in wood. Instead, knots, curling, and checks are recognized defects that can affect the structural integrity and appearance of wood.

Knots are formed where branches grow from the tree, creating irregularities in the wood grain that can impact strength and aesthetics. Curling refers to the warping or bending of wood due to uneven drying or moisture content, leading to challenges in fitting or finishing the wood. Checks are cracks that appear along the grain of the wood, usually as a result of drying stresses, and can compromise the durability of the material.

In contrast, while "pit holes" may occur as a result of insect activity or decay, they are not commonly referenced as a defect in traditional woodworking contexts. Instead, the focus is more on the characteristics of the wood itself, such as knots, curling, and checks that directly impact its quality and usability.