elephant
 n.— «It is sitting on what looks like the biggest new oilfield since the North Sea and Mexico offshore: a giant, by oil industry standards, if not yet exactly an elephant—Cano Limon, in Oxy’s 2.7 million-acre contract in Colombia.» —“Armand’s New Elephant” by James Cook Forbes June 17, 1985. (source: Double-Tongued Dictionary)