engaver

Describes a bird feeding its young by regurgitating partially digested food into their beaks, or, by extension, force-feeding poultry to fatten it — an older relative of the more common gaver.

• L'oiseau engave ses petits plusieurs fois par jour. — The bird feeds its chicks by regurgitation several times a day.
• Autrefois, on engavait les oies pour produire du foie gras. — In the past, geese were force-fed to produce foie gras.
• Les oisillons attendent, bec ouvert, que la mère les engave. — The chicks wait, beaks open, for their mother to feed them.

Rare enough that there's no real common-mistake pattern — the one thing worth flagging is that it's the older, narrower ancestor of gaver, which today is the everyday word for force-feeding or stuffing oneself with food.

Often confused with gaver.