A "stump" is the remaining part of a tree trunk after the tree has been cut down or has fallen. It is typically found at ground level and can vary in size depending on the height and diameter of the original tree. Stumps can be left in place for various reasons, such as providing habitat for wildlife or serving as a natural feature in landscaping. In addition to trees, the term "stump" can also refer to a challenge or problem that is difficult to solve. For example, a person might say they are "stumped" when they cannot find an answer to a tricky question or puzzle. This usage highlights the idea of being stuck or unable to move forward, similar to how a tree stump remains fixed in one spot.