Dialectal or archaic form meaning narrow, thin, or frail; sometimes relating to the edge or border of something.
From Old Norse fimbl- or related Germanic roots, possibly connected to 'fringe' or 'edge.' This is an archaic or dialectal English word with uncertain etymology, rarely used in modern English.
Fimble appears in fantasy literature influenced by Norse mythology—Ragnarök ('the Twilight of the Gods') was sometimes called 'Fimbulwinter,' but that actually comes from Old Norse fimbul-, not from English fimble!
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