WILDCATS

A cat that lives in the wilderness, specifically

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

An offensive formation with an unbalanced line and a snap directly to the running back rather than the quarterback.

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."

A cartridge modified from another calibre rather than being commercially produced.

(organized labour) A labour strike that has not been authorized by the leaders of a trade union.