splash out on something

Từ điển Oxford Advanced Learner 8th

ˌsplash ˈout (on sth) | ˌsplash sthˈout (on/for sth) derived
(BrE, informal)to spend a lot of money on sth
•We're going to splash out and buy a new car.
•He splashed out hundreds of pounds on designer clothes.
Main entry: ↑splash_derived