This is the 7904th most frequent Russian word.
келли
"Келли" is a transliteration of the name "Kelly" in English and does not have a specific standalone meaning in Russian.
In this sentence, 'Келли' is a proper noun used as the subject, representing the person's name.
Келли любит читать книги каждый вечер.
Kelly enjoys reading books every evening.
Here, 'Келли' is used as the object of the verb 'встречал', referring to the name of the person who was met.
На неделе я встречал Келли в библиотеке.
During the week, I met Kelly in the library.
In this example, 'Келли' is again a proper noun, functioning as the subject of the sentence, placed to specify who performed the action of the verb 'рассказала'.