"suckle" in the verb sense
suck milk from the mother's breasts
"the infant was suckling happily"
2. breastfeed, suckle, suck, nurse, wet-nurse, lactate, give suck
give suck to
"The wetnurse suckled the infant"
"You cannot nurse your baby in public in some places"
Source: WordNet® (An amazing lexical database of English)
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