beat something down

Từ điển Oxford Advanced Learner 8th

▪ I. ˌbeat sthˈdown derived
to hit a door, etc. many times until it breaks open
Main entry: ↑beat_derived
 
▪ II. ˌbeat sb/sth ˈdown (to sth) derived
to persuade sb to reduce the price at which they are selling sth
•He wanted $8 000 for the car but I beat him down to $6 000.
•I beat down the price to $6 000.
Main entry: ↑beat_derived