Fattened, as oxen, by feeding in a stable or on dry fodder.
The Century Dictionary (Public Domain)
Use "stall-fed" in a sentence
"Paulus Jovius in his description of Britain, and Levinus Lemnius, observe as much of this our island, that there was of old no use of [4083] physic amongst us, and but little at this day, except it be for a few nice idle citizens, surfeiting courtiers, and stall-fed gentlemen lubbers."
"But most part I say, such as are aptest to love that are young and lusty, live at ease, stall-fed, free from cares, like cattle in a rank pasture, idle and solitary persons, they must needs hirquitullire, as"
"And in the stall-fed life of the successful ant-heap — with its regular meals, regular duties, regular pleasures, an even course of life, and fear excluded — the vicissitudes, delights, and havens of today will seem of epic breadth."