ontario

Noun ontario has 2 senses

• ontario(n = noun.object) lake ontario - the smallest of the Great Lakes;
is a part of great lakes
is a kind of lake

• ontario(n = noun.location) - a prosperous and industrialized province in central Canada;
is a part of canada
is a kind of canadian province
has parts: canadian capital, capital of canada, ottawa, hamilton, kingston, sault sainte marie, sudbury, thunder bay, toronto, canadian falls, horseshoe falls, james bay, lake saint clair, lake st. clair, niagara, niagara falls, severn, severn river