Clampdown
ahd-5
noun.
An imposing of restrictions or controls.
the GNU version of the Collaborative International Dictionary of English
noun.
sudden restriction on an activity.
Wiktionary, Creative Commons Attribution/Share-Alike License
noun.
A sudden
repressive
or
punitive
restriction
or
control
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
verb.
repress or suppress (something regarded as undesirable)
noun.
sudden restriction on an activity