- The definition of crackdown is the strict enforcement of specific rules.
If your boss is tired of everyone being late and makes an announcement that the next person who is late is going to be fired, this is an example of acrackdown.
crackdown definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
a resorting to strict or stricter measures of discipline or punishment
crackdown definition by American Heritage Dictionary
An act or example of forceful regulation, repression, or restraint: a crackdown on crime.