n.
A figurative, usually compound expression used in place of a name or noun, especially in Old English and Old Norse poetry; for example, storm of swords is a kenning for battle.
[Old Norse, from kenna, to know, to name with a kenning.]
The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.