Milk meaning : A white liquid produced by the mammary glands of female mammals to nourish their young. From certain animals, especially cows, it is also called dairy milk and is a common food for humans as a beverage or used to produce various dairy products such as butter, cheese, and yogurt. A white (or whitish) liquid obtained from a vegetable source such as almonds, coconuts, oats, rice, and/or soy beans. Also called non-dairy milk. An individual serving of milk. An individual portion of milk, such as found in a creamer, for tea and coffee. The ripe, undischarged spat of an oyster. Semen.