0 to be able to eat or drink something without vomiting: --
On the day after her operation she couldn't keep anything down.
1 to control the size or number of something and prevent it from increasing: --
I'm going to sleep, so will you try to keep the noise down?
We need to work hard to keep our prices down.
2 to control the size or number of something and prevent it from increasing: --
To have any chance against the competition, we need to keep our prices down.
NYA ORD
European
May 10, 2021
DAGENS ORD
Shimmer
keep sth down