The Feds will tell you that cracking down on insider trades protects the rights of all investors.
The U.S. is cracking down on antibiotics fed to pigs and cows.
Mansfield Frazier on why jury nullification is back in the news—and why the feds are cracking down.
"split, opening," 14c., from crack (v.). Meaning "try, attempt" first attested 1836, probably a hunting metaphor, from slang sense of "fire a gun." Meaning "rock cocaine" is first attested 1985. The superstition that it is bad luck to step on sidewalk cracks has been traced to c.1890. Adjectival meaning in "top-notch, superior" is slang from 1793 (e.g. a crack shot).
[all senses are ultimately echoic; narcotics sense fr the sound of breaking crystals or the cracking sound the crystals make when smoked]