A unit of volume in the U.S. system of dry measures and the British Imperial system equal to 4 pecks. However, the amounts corresponding to a peck are different in the two systems, as summarized in the following table.
Bushel, Gallon, Imperial System, Quart, United States System of Liquid and Dry Measures
References
Woolf, H. B. (Ed. in Chief). Webster's New Collegiate Dictionary. Springfield, MA: Merriam, p. 1329, 1980.