to be fixed to an interest rate or exchange rate Variationlock inverbto be fixed to an interest rate or exchange rate ExampleBy buying francs forward the company is in effect locking itself into a pound-franc exchange rate of 10.06.Usageto lock in profitsto take profits, to sell investments at a profit to ensure that the profit is realised ExampleThe shares had become overpriced - it was time to lock in the profits.