| elfin | (adjective) relating to or made or done by or as if by an elf | - |
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| (adjective) usually good-naturedly mischievous | Synonyms: elfish, elvish |
| (adjective) small and delicate | Synonyms: elflike |
| (adjective) suggestive of an elf in strangeness and otherworldliness | Synonyms: fey |
| tailfin | (noun) a stabilizer that is part of the vertical tail structure of an airplane | Synonyms: tail fin, vertical fin, vertical stabiliser, vertical stabilizer |
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| (noun) one of a pair of decorations projecting above the rear fenders of an automobile | Synonyms: fin, tail fin |