Definitions for "Wean"
Gradually replacing breast milk with infant formula or other foods appropriate to an infants diet.
To separate nursing offspring from their dam so that they no longer receive milk.
Remove the foal from a mare so it can no longer nurse.
Hence, to detach or alienate the affections of, from any object of desire; to reconcile to the want or loss of anything.
to slowly decrease and then stop an intervention. This could be used when stopping a medication or when removing certain technological support such as a ventilator.