device for raising heavy weights off the ground
raise sth using a jack
leave sth readily; abandon
increase (salary, payment); raise
"you don't know jack"
"jack up the car so you can change the tire"
In order to lift the car high enough..we had to jack up the body.
你得先把汽车顶起来,然后设法拆轮子。 jack sth ⇔ up
It's time you jacked up my salary.
你该给我增加工资了。 jack up
Don't worry, he'll jack the whole thing up for us.