"Le" is a French definite article used to indicate a specific masculine noun. It is equivalent to "the" in English and is used before singular nouns, such as in the phrase le chat (the cat). In French grammar, "le" is part of the broader system of articles, which also includes la for feminine nouns and les for plural nouns. Understanding how to use "le" correctly is essential for forming coherent sentences in French and helps convey precise meaning in communication.