Also found in: Thesaurus, Encyclopedia, Wikipedia.
1. Situated toward the west.
2. Coming or being from the west: westerly winds.
n. pl. west·er·lies
A storm or wind coming from the west.
[Middle English, from wester, western, from Old English westra; see wes-pero- in Indo-European roots.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
(Physical Geography) meteorol the prevailing winds blowing from the west on the poleward sides of the horse latitudes, often bringing depressions and anticyclones
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014