boostboost2 noun [singular]1something that helps to increase something such as production, sales, or pricesThat optimistic outlook gave stocks and the dollar a boost.
Sales could get a boost in January and February.
2something that helps something to improve or become more successfulThe price of oil could soon be $15 a barrel or less, which would be a welcome boost to the American economy.
The sale of such a large nuclear power reactor is expected to give a boost to Canada’s nuclear industry.
The market got a boost on Friday when the Federal Reserve Board cut the interest rate that it charges member banks.
3something that helps to improve confidence or encourage peopleThe end of the war would almost certainly provide some sort of boost to business and consumer confidence.