What does "to top a tree" mean in the context of tree trimming?

In the context of tree trimming, "to top a tree" refers specifically to the practice of cutting the upper part of the tree to reduce its height. This technique often aims to manage the tree’s growth, influence its shape, or sometimes mitigate potential hazards, such as interference with power lines or structures. Topping can also promote denser foliage by forcing the tree to produce new lateral growth. Understanding this term is crucial for tree trimmers because it not only impacts the health and structure of the tree but also plays an essential role in safety and maintenance practices in urban and rural environments.