Gnarl
A Branch. A knot is formed in wood where a branch grows, and the larger branch or trunk that its growing from grows larger encasing the origin of the branch.
A knot forms in wood when a branch or limb grows out of the tree trunk, causing a concentration of grain and density in that area.
The dead knot defect in timber is caused by the death of a branch or twig within the tree, resulting in a hole or void in the wood where the knot once was. This defect can weaken the structural integrity of the timber and may affect its appearance and performance. Proper tree pruning and selection can help prevent dead knots from forming in timber.
A knot in a tree forms when a branch or limb dies and its base becomes enclosed by new layers of wood as the tree grows. This creates a swollen area called a branch collar. Over time, the branch collar can become surrounded by new growth, forming what appears as a knot in the wood.
A tree branch is called a Bough.
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As a tree grows, lower branches sometimes die, and their bases may become overgrown and surrounded by newer layers of trunk wood, forming a type of imperfection known as a knot. The dead branch may not be attached to the trunk wood except at its base, and can drop out after the tree has been sawn into boards. The know is often weak but can be pleasing to the sight and are valuable for that reason.