What is the meaning of Campaign?

A series of operations undertaken to achieve a set goal.

A player or team's efforts during a sporting season.

A series of play sessions using the same player characters, forming a continuous narrative.

The period during which a blast furnace is continuously in operation.

An open field; a large, open plain without considerable hills; a champaign.

An excursion into the countryside.

To take part in a campaign.

Consistently ride in races for a racing season.

Source: wiktionary.org