wean 
/ˈwi:n/ verb
weans; weaned; wean·ing /ˈwi:n/ verb [+ obj] : to start feeding (a child or young animal) food other than its mother's milk
▪ The calves are weaned at an early age.
▪ The calves are weaned at an early age.
wean from/off [phrasal verb]
wean (someone or something) from/off (something) : to make (someone or something) stop doing or using (something)
▪ efforts to wean the country from its dependence on foreign oil ▪ I'm gradually weaning myself off cigarettes.
▪ efforts to wean the country from its dependence on foreign oil ▪ I'm gradually weaning myself off cigarettes.
wean on [phrasal verb]
wean (someone) on (something) : to have (someone) see, use, or experience (something) often especially from a young age — usually used as (be) weaned on ▪ a generation of kids weaned on television [=a generation of kids who have watched television a lot since they were very young] ▪ Although born in the 1970s, the singer says she was weaned on the music of the 1940s.
