Akademik

knock something out

1) destroy a machine or damage it so that it stops working

■ destroy or disable enemy installations or equipment

2) informal produce work at a steady fast rate

if you knock out a thousand words a day you'll soon have it finished

3) empty a tobacco pipe by tapping it against a surface

* * *

ˌknock sthˈout derived

(informal) to produce sth, especially quickly and easily

•

He knocks out five books a year.

Main entry: ↑knock_derived

Useful english dictionary. 2012.