The Collaborative International Dictionary of English v.0.48:
Northern \North"ern\, a. [AS. nor[eth]erne.]
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. (Zool.) See Loon.
Northern lights. See Aurora borealis, under Aurora.
Northern spy (Bot.), an excellent American apple, of a
yellowish color, marked with red.