Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio.
a shrill, trilled sound, as of some insects or birds
to make such a sound
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.
A harsh trilling sound, such as that made by crickets.intransitive verb chirred, chirr·ing, chirrs
To make a harsh trilling sound.