What does milk mean?
Milk usually refers to the whitish liquid produced by the mammary glands of mammals, most often cows, goats, or sheep, and used as a drink and food ingredient. In everyday speech it can also mean a plant-based product such as oat, soy, or almond milk. Figuratively, the word conveys nourishment, comfort, gentleness, or moral benefit, especially in the expression milk of human kindness. These associations are reinforced by the word's long use in poetry, religion, and folklore, where milk often symbolizes abundance, purity, or nurture. The related verb means to extract milk from an animal but can also describe unfairly extracting money, labor, or value from another person. Milk is normally treated as an uncountable noun, although plural forms such as milks are increasingly heard when several plant-based varieties are being discussed. The word is common in both British and American English, with no major standard regional difference in its core meaning or pronunciation.
The whitish liquid secreted by the mammary glands of mammals, especially cows, goats, and sheep, and commonly consumed as a drink and food ingredient. Figuratively, it can mean nourishment, gentle treatment, or a mild and lenient disposition.
"The baby had cooled milk in a bottle beside the chair."
Milk is normally uncountable when referring to the ordinary substance. The plural milks is increasingly used for distinct plant-based varieties.
To draw milk from an animal, especially a cow. Figuratively, it means to extract money, labor, or value from someone unfairly.
"Farmers milk their cows twice a day."
The figurative sense is informal and usually implies persistent or exploitative behavior.
The ordinary mass noun normally has no plural. The plural milks is chiefly used for distinct varieties, especially plant-based beverages, and remains relatively uncommon in traditional usage.
"The café offers several milks, including oat, soy, and almond."
The composition of human milk changes during a feed: milk expressed later generally contains more fat than the initial milk.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does milk come from?
The English word descends from Old English milc, the native Germanic word for milk. Its reconstructed ancestor, Proto-Germanic *milks, was inherited by several Germanic languages, giving forms such as Dutch melk and German Milch. Both English and the related Germanic forms ultimately derive from the same Indo-European root, commonly reconstructed as *melk-, associated with milk and the act of milking.
Related word forms
How milk is actually used
As the ordinary mammalian substance, milk is normally an uncountable mass noun. The plural milks is uncommon, though it is increasingly used for distinct varieties of plant-based beverages. The verb senses are less common than the noun and range from the literal act of milking an animal to figurative exploitation.
Easily confused with milk
Milt is the sperm-containing secretion of a male fish, whereas milk is the mammalian secretion produced by the mammary glands.