Main Entry: knock down

Pronunciation: \-ˈdau̇n\

Function: transitive verb

Date: 15th century

1 : to strike to the ground with or as if with a sharp blow : fell
2 : to dispose of (an item) to a bidder at an auction sale
3 : to take apart : disassemble
4 : to receive as income or salary : earn <positions where they were able to knock down good money — Infantry Journal>
5 : reduce <knocked the price down>