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English definition of “keep sth down”

keep sth down

verb uk phrasal verb with keep   /kiːp/ (kept, kept) us  

(FOOD)

to be able to eat or drink something without vomiting: On the day after her operation she couldn't keep anything down.

(SIZE)

B2 to control the size or number of something and prevent it from increasing: We need to work hard to keep our prices down.
(Definition of keep sth down from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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