keep down

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• verb transitive To repress.
• verb transitive To restrain or control (a sound).
• verb transitive To cause not to increase or rise.
• verb transitive Not to vomit.
• verb intransitive To lie low. To stay concealed by not standing up

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• verb put down by force or intimidation
• verb place a limit on the number of
• verb manage not to throw up