a freeze on (something)
A temporary cessation of some practice. Is it true that the company had to put a freeze on raises this year?
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
freeze on (doing something)
Fig. a policy that put a temporary end to something. The company put a freeze on hiring as soon as they took us over.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.