Source : WordNet®

wildcat
     adj 1: outside the bounds of legitimate or ethical business
            practices; "wildcat currency issued by irresponsible
            banks"; "wildcat stock speculation"; "a wildcat
            airline"; "wildcat life insurance schemes"
     2: without official authorization; "an unauthorized strike";
        "wildcat work stoppage" [syn: {unauthorized}, {unauthorised}]
     3: (of a mine or oil well) drilled speculatively in an area not
        known to be productive; "drilling there would be strictly
        a wildcat operation"; "a wildcat mine"; "wildcat
        drilling"; "wildcat wells"
     n 1: an exploratory oil well drilled in land not known to be an
          oil field [syn: {wildcat well}]
     2: a cruelly rapacious person [syn: {beast}, {wolf}, {savage},
        {brute}]
     3: any small or medium-sized cat resembling the domestic cat
        and living in the wild
     [also: {wildcatting}, {wildcatted}]