to take action to help something succeed or grow, usually by spending money on it
Spring is the time when the government primes the pump to help farmers prepare theirfields.
Examples of 'prime the pump' in a sentence
prime the pump
Any government trying to borrow more to prime the pump merely makes investors, businesses and consumers even more nervous.
Times, Sunday Times (2011)
If it were, we could loosen fiscal policy and run deficits to prime the pump, as former treasury secretaries and the 'stagnationists' have been proposing.