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breast milk

n. milk produced by human mammary glands.

Wikipedia
Breast milk

Breast milk is the milk produced by the breasts (or mammary glands) of a human female for her baby. Milk is the primary source of nutrition for newborns before they are able to eat and digest other foods; older infants and toddlers may continue to be breastfed, either exclusively or in combination with other foods from around six months of age when solid foods may be introduced.