"Du" is a French preposition that translates to "of the" or "from the" in English. It is a contraction of the preposition "de" (of) and the definite article "le" (the). "Du" is commonly used to indicate possession, origin, or a part of something, making it an essential part of French grammar. In addition to its grammatical function, "du" is often used in various expressions and phrases in the French language. For example, it appears in culinary terms like "du pain" (some bread) or "du vin" (some wine), reflecting its importance in everyday conversation and culture, including French cuisine and dining experiences.