moving, directed, or situated toward the east: an easterly course.
(especially of a wind) coming from the east: an easterly gale.


toward the east.
from the east.

noun, plural east·er·lies.

a wind that blows from the east.


Origin of easterly

1540–50; obsolete easter eastern (see easterling) + -ly
Related formseast·er·li·ness, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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British Dictionary definitions for easterly



of, relating to, or situated in the east

adverb, adjective

towards or in the direction of the east
from the eastan easterly wind

noun plural -lies

a wind from the east
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for easterly

1540s, from easter (late 14c.), variant of eastern + -ly (2). As a noun meaning "easterly wind," by 1901. Old English easterlic meant "pertaining to Easter."

Online Etymology Dictionary, © 2010 Douglas Harper

Science definitions for easterly



A wind, especially a prevailing wind, that blows from the east. The trade winds in tropical regions and the prevailing winds in the polar regions are easterlies. See illustration at wind.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.