wildcat

A cat that lives in the wilderness, specifically:

A cat that lives in the wilderness, specifically:

A cat that lives in the wilderness, specifically:

A cat that lives in the wilderness, specifically:

2003 April 24, CNN Upon checking it out, we found a total of 13 newborn wildcats: nine newborn tigers and two newborn leopards.

A person who acts like a wildcat, (usually) a violent and easily-angered person or a sexually vigorous one.

2002 September 26, The Young and the Restless Anyone who's man enough to have landed a wildcat like you had to be quite a guy.

Of or concerning businesses operating outside standard or legitimate practice, especially

Then the development of the home country was neglected for some wildcat idea of bringing up the backward people of other lands.

[…] the Tank being a small arena theatre located out between a traffic analysis firm and a wildcat transistor outfit that hadn't been there last year and wouldn't be this coming but meanwhile was underselling even the Japanese and hauling in loot by the steamshovelful.

Of or concerning businesses operating outside standard or legitimate practice, especially:

Of or concerning businesses operating outside standard or legitimate practice, especially:

Of or concerning businesses operating outside standard or legitimate practice, especially:

Of or concerning customized or hand-made cartridges.

To drill for oil in an area where no oil has been found before.

You'd have to be very rich or very desperate to go wildcatting that far east.

His pitch was that fracking had transformed the production of gas from a hit-or-miss proposition to one that operated with an on and off switch. It was manufacturing, not wildcatting.