Lactation
Part of speech: noun
Definition: The secretion of milk from the mammary gland of a female mammal. The process of providing the milk to the young; breastfeeding. The period of time that a mother lactates to feed her young; lactation period.
Suckling
Part of speech: noun
Definition: A young mammal which isn't weaned yetA young horse (fowl) that still suckles milk from its mother, a dam.
Part of speech: verb
Definition: To give suck to; to nurse at the breast, udder, or dugs.