4. (Metal.) The period during which a blast furnace is continuously in operation.
Cam*paign" (?), v. i. To serve in a campaign.
Cam*paign"er (?), n. One who has served in an army in several campaigns; an old soldier; a veteran.
Cam*pa"na (?), n. [LL. campana bell. Cf. Campanle.] 1. (Eccl.) A church bell.