Traunch
One of many influxes of cash that is part of a single round of investment.
Investopedia Commentary
For example, you might hear: "The $6.3 million is the first traunch of an $8 million round, with the extra $1.7 million expected over the next three months."
See also: Angel Investor, Down Round, Seed Capital, Series A (Preferred Stock), Venture Capital, Vulture Capitalist