n.
A figure of speech in which exaggeration is used for emphasis or effect, as in I could sleep for a year or This book weighs a ton.
[Latin hyperbolē, from Greek huperbolē, excess, from huperballein, to exceed : huper, beyond; see hyper- + ballein, to throw.]
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.