A small mountain or hill, or a diminutive or secondary mountain formation; a term used in geographical or descriptive writing.
From 'berg' (mountain, from Old Norse 'bjarg' and German 'Berg') plus the diminutive suffix '-let' (meaning small). This follows English patterns for making small versions of things.
The '-let' suffix is delightful because it makes everything sound miniature and cute—you can berglet something, ringlet, or anklet, and suddenly you're describing the tiny version of something grand.
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