An English measure of capacity, containing 63 wine gallons, or about 52½ imperial gallons; a half pipe
Any of various units of volume or capacity ranging from 63 to 140 gallons (238 to 530 liters), especially a unit of capacity used in liquid measure in the United States equal to 63 gallons (238 liters)
A large cask or barrel, of indefinite contents; esp. one containing from 100 to 140 gallons
"A large cask or barrel; esp : one containing from 63 to 140 gallons A U S unit equal to 63 gallons" (Webster) Ian Nottage reports a U K hogshead to be 54 Imperial Gallons