1. To accustom a baby or infant mammal to solid food or some source of nourishment other than breastmilk. A noun or pronoun can be used between "wean" and "on"; often used in passive constructions. Children in this village are weaned on fish meat from as early as three months of age. Emerging evidence is suggesting that farmers should begin weaning piglets on feed closer to 28 days after birth, as opposed to the traditional age of three weeks.

2. To accustom a person to something at great length from a very young age. A noun or pronoun can be used between "wean" and "on"; often used in passive constructions. More and more parents are weaning their kids on smart devices as a form of substitute childcare, which in turn results in a decline in social interactions and physical activity. For a generation weaned on schlocky B movies of the 1980s, this film will be a nostalgia-driven delight.