Alternative past tense spelling of caracole with double-l; moved in a spiraling pattern.
British variant spelling using doubled consonant before adding -ed, similar to how 'travel' becomes 'travelled.' This follows British English conventions from the 18th century onward.
The caracolled/caracoled spelling variation is a perfect example of how American and British English diverged—Americans simplified to single consonants while British English kept the doubled consonant tradition from French.
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