Obstruct refers to the act of blocking or hindering something from moving or functioning properly. This can occur in various contexts, such as when a physical object, like a tree, falls across a road, preventing vehicles from passing. Obstructions can also be metaphorical, such as when a legal issue delays a project. In medical terms, obstruction can describe a blockage in the body, such as in the digestive system where food cannot pass through due to a tumor or other issues. This can lead to discomfort and requires medical attention to resolve the blockage and restore normal function.