(derogatory, dated) Of or concerning irresponsible banks or banking, (particularly) small, independent operations.

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

(zoology) The gnu.

(intransitive, simile) To spread or disseminate rapidly or uncontrollably.

A rapidly spreading fire, especially one occurring in a wildland area. / (historical) Greek fire, Byzantine fire. / (dermatology) A spreading disease of the skin, particularly erysipelas.

(uncountable) Uncultivated and unsettled land in its natural state inhabited by wild animals and with vegetation growing wild; (countable) a tract of such land; a waste or wild.

(computing) A character that takes the place of any other character or string that is not known or specified. / (also written wild card) An uncontrolled or unpredictable element.

In a wild, uncontrolled manner. / To a ridiculous or extreme degree; extremely.

plural of wildebeest

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