drawdown

noun

1. 1.The act of reduction or depletion.
2. 2.The result of reduction or depletion.
3. 3.A change in hydraulic head in a well or other body of water.
4. 4.A measure of the decline from a historical peak in some variable, typically the cumulative profit or total open equity of a financial trading strategy.
5. 5.The process of a bank releasing previously agreed loan amount to the borrower, hence making it available for them to use.