A small rounded hill or mound, usually not very tall.
From Old English 'cnoll,' related to Old Norse 'knollr.' The word is connected to similar Germanic words meaning 'ball' or 'round object,' reflecting the shape of a knoll.
You'll see 'knoll' in place names everywhere—it was such a common geographical feature that Anglo-Saxon settlers named locations by their knolls. Graveyards were often built on knolls because you could see the whole landscape from the top.
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