1 (in full long hundredweight) Brit. a unit of weight equal to 112 lb. avoirdupois (about 50.8 kg).
2 (in full metric hundredweight) a unit of weight equal to 50 kg.
3 (in full short hundredweight) US a unit of weight equal to 100 lb. (about 45.4 kg).
Useful english dictionary. 2012.