wildcat

Short definition from Wiktionary

Noun

1. 1
   A cat that lives in the wilderness, specifically: Felis silvestris, a common small Old World wild cat somewhat larger than a house cat.
2. 2
   A cat that lives in the wilderness, specifically: A bobcat (Lynx rufus) or other similar New World species of lynx.
3. 3
   A cat that lives in the wilderness, specifically: Any feral cat.
4. 4
   A cat that lives in the wilderness, specifically: Alternative spelling of wild cat, any undomesticated felid, as tigers or lions.
5. 5
   A person who acts like a wildcat, (usually) a violent and easily-angered person or a sexually vigorous one.
6. 6
   An offensive formation with an unbalanced line and a snap directly to the running back rather than the quarterback.
7. 7
   A wheel that can be adjusted so as to revolve either with or on the shaft of a capstan.
8. 8
   Clipping of wildcat cartridge.
9. 9
   Clipping of wildcat strike (“a strike undertaken without authorization from the relevant trade union”).
10. 10
    Clipping of wildcat money (“notes issued by a wildcat bank”).

Adjective

1. 1
   Of or concerning businesses operating outside standard or legitimate practice, especially
2. 2
   Of or concerning businesses operating outside standard or legitimate practice, especially: Of or concerning irresponsible banks or banking, (particularly) small, independent operations.
3. 3
   Of or concerning businesses operating outside standard or legitimate practice, especially: Of or concerning oil exploration in new areas, (particularly) small, independent operations.
4. 4
   Of or concerning businesses operating outside standard or legitimate practice, especially: Of or concerning actions undertaken by workers without approval or in defiance of the formal leadership of their trade unions.
5. 5
   Of or concerning customized or hand-made cartridges.
6. 6
   Unauthorized by the proper authorities.

Verb

1. 1
   To drill for oil in an area where no oil has been found before.