Aspen refers to a type of tree, specifically the aspen tree. It is a deciduous tree that is native to cooler regions in the Northern Hemisphere. It is characterized by its smooth bark and leaves that tremble or quake even with the slightest breeze. If it is referring to a Rocky Mountain town, it is likely referring to Aspen, Colorado, which is a well-known ski resort town in the United States.
Note: The provided meaning of the answer is for the latest New York Times crossword puzzle clue: Tree with "eyes" on its bark. Explanations are generated by AI and may be inaccurate.