A method of dieting that avoids bread, milk, butter, beer, sugar, and potatoes.
Etymology: named after English undertaker William Banting. He undertook such a diet himself and lost 46 pounds over the course of a year. In 1863 he distributed a booklet titled "Letter on Corpulence, Addressed to the Public", which described his diet and results. Although similar in some respects to modern low-carb and low-glycemic diets, the sample diet listed in the booklet included 3-5 glasses of wine per day plus an optional tumbler of grog for a nightcap, after which Mr. Banting experienced "an excellent night's rest".
The diet became quite popular, and bant became a verb. The verb initially referred to the specific diet but soon was used for dieting in general.