The French word for milk is 'lait'. It is a common noun used to refer to the white liquid produced by mammals, such as cows, goats, and sheep. Milk is a staple in many diets around the world and is often consumed as a beverage or used in cooking and baking. It is also used to make dairy products such as cheese, yogurt, and butter. Milk is a good source of calcium, protein, and other essential vitamins and minerals.