Definition of "serration" [ser•ra•tion]

• The state of being serrate. (noun)
• A series or set of teeth or notches. (noun)
• A single tooth or notch in a serrate edge. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "I cannot tell why so called -- its small and rounded leaves having nothing like oak leaves about them, except the serration, which is common to half, at least, of all leaves that grow."
• "To be sure, outrage comes in many forms, flavors and degrees of serration."
• "They have black handles and thin pointy tips with an inch of serration starting just below the tips."