suckle

verbs

suck milk from the mother's breasts
"the infant was suckling happily"
suckle
entails
take in liquids
"The patient must drink several liters each day"; "The children like to drink soda"
drink, imbibe
is a type of (narrower)
take in food; used of animals only
"This dog doesn't eat certain kinds of meat"; "What do whales eat?"
eat, feed
give suck to
"The wetnurse suckled the infant"; "You cannot nurse your baby in public in some places"
breastfeed, give suck, lactate, nurse, suck, suckle, wet-nurse