What is a timberline?

Timberline: On mountains and in frigid regions, the line above which there is no timber.

To find the answer to your question, you can utilize various sources of information such as dictionaries, encyclopedias, or reliable websites. In this case, let's turn to a reliable source like an online dictionary. Here’s how you can do it:

1. Open a web browser on your computer or smartphone.
2. In the search bar, type in "timberline definition" or "what is timberline."
3. Press Enter or click on the search button to initiate the search.
4. Several search results will show up. Look for reputable sources such as online dictionaries, encyclopedia websites, or educational resources.
5. Click on one of the reliable sources, such as a dictionary website like Merriam-Webster or Oxford Dictionaries.
6. On the dictionary website, search for the term "timberline."
7. Read the definition provided, which will explain that a timberline is the line above which there is no timber on mountains or in frigid regions.

By following these steps, you can find a reliable definition of "timberline" as quickly as possible.