To split or divide; to break apart along lines of cleavage or natural division.
Variant or dialectal form possibly related to 'fissile' or 'fission,' though this appears to be a less common or regional English word derived from the Latin 'fissus' (split).
Though rare in modern English, 'fissle' captures an interesting linguistic moment when English speakers were trying to create verbs from the Latin concept of splitting—nature is always splitting things!
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