suckle
/ˈsʌkl/verb
with obj.
1- feed (a baby or young animal) from the breast or teat给（婴儿, 幼兽）喂奶：
a mother pig suckling a huge litter.
一头给一大窝小猪喂奶的母猪。
1.1
- no obj.(of a baby or young animal) feed by sucking the breast or teat（婴儿, 幼兽）吃奶：
the infant's biological need to suckle.
婴儿吃奶的生理需要。
词源
late Middle English: probably a back-formation from SUCKLING.