The smallest and most easterly of the Great Lakes, lying on the US–Canadian border between Ontario and New York State.
安大略湖（五大湖中最靠东面的也是最小的一个湖，位于美加边境的安大略省和纽约州之间）
Definition of Ontario, Lake in US English:
Ontario, Lake
proper noun
The smallest and most easterly of the Great Lakes. It lies on the US–Canadian border between Ontario and New York and is linked to Lake Erie by the Niagara River and to the Atlantic Ocean by the St. Lawrence Seaway.