suckle
verb [ I or T ] uk/ˈsʌk.əl/ us/ˈsʌk.əl/
给（尤指幼兽）喂奶;（尤指幼兽）吃奶，吸奶
to feed a baby, especially a baby animal, with milk from the organ in the mother that produces milk, or (of a baby, especially a baby animal) to drink milk from the mother
We watched the cow suckling her calves. 我们看着奶牛给小牛喂奶。
The puppies went back to their mother to suckle. 小狗跑回到狗妈妈身边去吃奶。
Synonym: breastfeed
Compare: lactate