get your head down

Từ điển Oxford Advanced Learner 8th

▪ I. get your ˈhead down idiom
(informal)
1. (BrE)to sleep
•I managed to get my head down for an hour.
2. = ↑keep your head down
Main entry: ↑head_idiom
 
▪ II. keep/get your ˈhead down idiom
to avoid attracting attention to yourself
•If I were you, I'd keep your head down for a couple of weeks.
Main entry: ↑head_idiom