foremilk

/ˈfɔːrmɪlk/
noun
  1. The thin, watery milk that comes first when a baby begins to breastfeed, which is low in fat and high in water and lactose.
    • Some mothers worry if their baby gets too much foremilk and not enough hindmilk.
    • The baby drank the foremilk first before the richer hindmilk came.
    • Foremilk helps quench the baby's thirst at the start of a feeding.