province-n; 2 Senses

Sense Number 1: principal administrative division of a country or empire

Commentary: PROVINCE[+location][+geographical][+territory][+division][+administrative][+principal] The territory occupied by one of the constituent administrative districts of a nation or empire

She grew up in a western province of Canada.
He'll go to Paris after he's toured all the provinces.
In ancient Rome, governors were sent to rule the provinces outside of Italy.

WordNet 3.0 Sense Numbers: 1

Sense Number 2: scope of interest, responsibility, expertise

Commentary: PROVINCE[+environment][+social][+scope][+responsibility/+interest/+expertise] The proper sphere or extent of your activities, a special interest or responsibility

She knew little about wine, that had been her father's province.
It was his province to take care of himself.
That question is outside my province.

WordNet 3.0 Sense Numbers: 2