hundredweight Syllabification: (hun·dred·weight)Pronunciation: /ˈhəndridˌwāt/ (abbreviation: cwt)Translate hundredweight | into French | into German | into Italian | into Spanish Definition of hundredweight noun (plural same or hundredweights) a unit of weight equal to one twentieth of a ton, in particular. (also short hundredweight) US (in the US) equal to 100 lb avoirdupois (about 45.4 kg). (also metric hundredweight) (in the metric system) equal to 50 kg. (also long hundredweight) (in the UK) equal to 112 lb avoirdupois (about 50.8 kg). hundredweight in other Oxford dictionaries Definition of hundredweight in the British & World English dictionary