Correct spelling for the English word "Jullet" is [d͡ʒˈʌlɪt], [dʒˈʌlɪt], [dʒ_ˈʌ_l_ɪ_t] (IPA phonetic alphabet).
There doesn't seem to be any specific etymology or widely recognized definition for the word "Jullet". It is possible that it may be a misspelling or a variant of another word. Without additional context or information, it is challenging to provide a definitive answer.