north-north·west (nôrth'nôrth-wěst', nôr'nôr-wěst') n.
Abbr. NNW The direction or point on the mariner's compass halfway between due north and northwest, or 22°30' west of due north. adj. To, toward, of, facing, or in the north-northwest. adv. In, from, or toward the north-northwest.