hundredweightPronunciation: /ˈhʌndrədweɪt/ (abbreviation: cwt)Translate hundredweight | into French | into German | into Italian | into Spanish Definition of hundredweight noun (plural same or hundredweights) 1 (also long hundredweight) British a unit of weight equal to 112 lb avoirdupois (about 50.8 kg). 2 (also short hundredweight) US a unit of weight equal to 100 lb (about 45.4 kg). 3 (also metric hundredweight) a unit of weight equal to 50 kg. hundredweight in other Oxford dictionaries Definition of hundredweight in the US English dictionary