The word "she" is a singular, feminine, third-person personal pronoun used to refer to a female person or animal already mentioned or easily identified in context. It functions primarily as the subject of a verb, substituting for a female noun or name to avoid repetition. "She" can also appear in different grammatical roles in sentences, such as a subject ("She is here"), an object ("I saw her"), or possessive (her, hers). Its origin traces back to Old English, evolving from feminine demonstrative pronouns.