wildcat (Adjective) — Outside the bounds of legitimate or ethical business practices. ex. "wildcat currency issued by irresponsible banks" ex. "wildcat stock speculation" ex. "a wildcat airline" ex. "wildcat life insurance schemes"
wildcat (Adjective) — Without official authorization. ex. "wildcat work stoppage"
wildcat (Adjective) — (of a mine or oil well) drilled speculatively in an area not known to be productive. ex. "drilling there would be strictly a wildcat operation" ex. "a wildcat mine" ex. "wildcat drilling" ex. "wildcat wells"
wildcat (Noun) — An exploratory oil well drilled in land not known to be an oil field.
wildcat (Noun) — A cruelly rapacious person.
wildcat (Noun) — Any small or medium-sized cat resembling the domestic cat and living in the wild.
wildcat (Verb) — Prospect for oil in an area where no oil has been found before.