jam the brakes on

to press down hard on a vehicle's brakes. Alice jammed the brakes on and the car skidded all over the place. She jammed on the brakes.

Name	Pronounced	Usage
Julianna	yuw-lee-AHN-nah (Polish), joo-lee-AHN-ə (English)	Hungarian, Polish, English
Modesto	mo-DHE-sto (Spanish, Italian)	Spanish, Italian, Portuguese
Hourig	-	Armenian
EugÊNio	-	Portuguese
Lalo	LAH-lo	Spanish
Beach	[bi:tʃ]