- to cause (a child or young animal) to become accustomed gradually to food other than its mother's milk; to cause to give up suckling
- now, often, to cause to give up drinking milk from a bottle with a nipple
- to withdraw (a person or thing) by degrees (from a dependence on something): to wean a patient from a ventilator, an addict from heroin, an economy from fossil fuels, etc.
- to be raised on or brought up with; to become accustomed to: with on: weaned on good books
Origin of weanMiddle English wenen from Old English wenian, to accustom, train, with sense of awenian, to wean from a- ( from af-, away) + wenian from Indo-European base an unverified form wen-, to desire, attain, be satisfied from source Classical Latin venus, love