suck ‧ le /ˈsʌk ə l/ BrE AmE verb
[ Date: 1300-1400 ; Origin: Probably from suckling ]
1 . [transitive] to feed a baby or young animal with milk from the breast:
a sheep suckling her lamb
2 . [intransitive] if a baby or young animal suckles, it sucks milk from a breast ⇨ breast-feed , nurse