Everywhere; also, continually, at every moment. For example, He found trash strewn about at every turn, or Life holds surprises at every turn. The turn here does not signify change of direction but change of circumstances, and the phrase generally is something of an exaggeration. [Late 1500s]
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.