The definition of frass is the waste left as an animal's bowel movement.noun
An example of frass is what a bug excretes after eating a leaf.YourDictionary definition and usage example. Copyright © 2013 by LoveToKnow Corp.
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio.
the mixture of fecal material and plant matter left by an animal, esp. an insect, after it has eaten its way into a tree, plant, etc.
Used by arrangement with John Wiley & Sons, Inc.
The American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Debris or excrement produced by insects.
Origin: German, feed, result of eating, insect damage, from Middle High German vrâz, from Old High German frāz, from frezzan, to eat; see ed- in Indo-European roots.