northerna.[AS. norerne.]1. Of or pertaining to the north; being in the north, or nearer to that point than to the east or west.()2. In a direction toward the north; as, to steer a northern course; coming from the north; as, a northern wind.()Northern diver. (Zol.) See Loon. -- Northern lights. See Aurora borealis, under Aurora. -- Northern spy (Bot.), an excellent American apple, of a yellowish color, marked with red.()