hogsheadPronunciation: /ˈhɒgzˌhɛd/ (abbreviation: hhd)Definition of hogshead noun a large cask. a measure of capacity for wine, equal to 52.5 imperial gallons or 63 US gallons (238.7 litres). a measure of capacity for beer, equal to 54 imperial gallons or 64 US gallons (245.5 litres). Origin: Middle English: from hog + head; the reason for the term is unknownhogshead in other Oxford dictionaries Definition of hogshead in the US English dictionary