break your neck to do something
break (one's) neck
1. To put forth a great deal of effort. I've been breaking my neck trying to get a passing grade this semester, so failing by two measly points is incredibly frustrating. Don't break your neck trying to please these people—they'll never appreciate it.
2. To harm or punish one very severely. Typically used as a warning or a threat. Be careful—the boss will break your neck if he catches you using company property like that. You just watch yourself, pal. If I see you snooping around here again, I'll break your neck!
Farlex Dictionary of Idioms. © 2022 Farlex, Inc, all rights reserved.
break your neck to do somethingexert yourself to the utmost to achieve something. informal
Farlex Partner Idioms Dictionary © Farlex 2017