KingstonPronunciation: /ˈkɪŋstən/Definition of Kingston 1the capital and chief port of Jamaica; population 580,000 (est. 2007). Founded in 1693, it became capital in 1870. 2a port in SE Canada, on Lake Ontario, at the head of the St Lawrence River; population 117,207 (2006). 3 (also Kingston upon Thames) a town and London borough on the south bank of the Thames, county town of Surrey. Kingston in other Oxford dictionaries Definition of Kingston in the US English dictionary