A half-moon.Licensed from iStockPhoto
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio.
- the moon in its first or last quarter phase
- anything shaped like a half-moon or crescent
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.
- The moon when only half its disk is illuminated.
- Something, such as the lunula of a fingernail, that is shaped like a crescent.