브레이크를 밟다. / hit the brakes / put the brakes / slam on the brakes / apply the brakes. // brake OR brakes.

브레이크를 밟다. hit the brakes / put the brakes / slam on the brakes / apply the brakes. // brake OR brakes.

 

브레이크를 밟다. put on the brake. (https://m.blog.naver.com/)

 

▣ brake OR brakes? 

It rather depends on how you view the noun 'brake'. In a car, you can 'hit the brake' because the brake is often used for 'brake pedal'. 'Hit the brakes' refers to the actual brakes or the braking system as a whole. The same logic applies to bikes. Even if the bike only has brakes on the front wheel, there are still two brakes, on each side of the wheel. (https://forum.wordreference.com/)

 

cf. put the brake on

Our boss put the brakes on executing our proposal.

https://www.theidioms.com/put-the-brakes-on/