Campaign

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

A connected series of military operations forming a distinct stage in a war; the time during which an army keeps the field.

Political operations preceding an election; a canvass.

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

To serve in a campaign.

a series of actions advancing a principle or tending toward a particular end; "he supported populist campaigns"; "they worked in the cause of world peace"; "the team was ready for a drive toward the pennant"; "the movement to end slavery"; "contributed to the war effort"

run, stand, or compete for an office or a position; "Who's running for treasurer this year?"