breast milk; mother's milk
Refers to milk produced by a mother for an infant. Common in childcare and medical contexts, as in 母乳で育てる and 母乳育児.
She gives the baby breast milk.
I want to raise my baby on breast milk.
I'm raising my daughter on breast milk.
It's time to give the baby some breast milk.
After giving birth, my breast milk didn't come in for a while.
母乳 is milk produced naturally by the mother, while 粉ミルク is powdered formula used as its manufactured substitute.
A transparent Sino-Japanese compound: 母 means 'mother' and 乳 means 'milk' or 'breast,' conventionally forming 'mother's milk.'