1. A small hill or mound. This is the most common meaning, and it can be used to describe both natural and man-made mounds.
2. A small, isolated patch of vegetation. This usage is less common, but still found in some regions.
The word is believed to be derived from the Old Norse word "tumba," meaning "grave mound."
Here are some examples of how "tummock" might be used:
* "We walked across the moor, navigating the many tummocks and dips."
* "The sheep grazed peacefully on the grassy tummock."
* "The old man pointed to a distant tummock, saying it was where his grandfather had been buried."
It's important to note that while "tummock" is a perfectly valid word, it's not used as widely as other words for similar concepts. If you're unsure whether to use "tummock," it's usually safer to use a more common word like "hill," "mound," or "knoll."