west by north
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio.
the direction, or the point on a mariner's compass, halfway between due west and west-northwest; 11°15′ north of due west
Used by arrangement with John Wiley & Sons, Inc.
noun Abbr. WbNThe American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
The direction or point on the mariner's compass halfway between due west and west-northwest, or 78°45: west of due north.adverb & adj.
Toward or from west by north.