(1):

(adv.) Toward the northwest.

(2):

(a.) Pertaining to, or in the direction of, the point between the north and west; being in the northwest; toward the northwest, or coming from the northwest; as, the northwest coast.

(3):

(a.) Coming from the northwest; as, a northwest wind.

(4):

(n.) The point in the horizon between the north and west, and equally distant from each; the northwest part or region.