make a killing
US /meɪk ə ˈkɪlɪŋ/
UK /meɪk ə ˈkɪlɪŋ/
1.
to make a lot of money very quickly and easily
:
•
He made a killing in the stock market during the tech boom.
•
They're hoping to make a killing by selling their startup.
to make a lot of money very quickly and easily