dry powder
n.—Gloss: a (venture capital) company’s unspent investment funds. «Then there are the private equity and VCs looking to put some of their “dry powder” to use (which is how nearly every VC I’ve talked to has referred to the unspent amount of their Fund).» —“Dry Powder” by Rags Gupta Digital Music News: Insider Blogs Aug. 9, 2004. (source: Double-Tongued Dictionary)