In dictionaries:
knocking on
Approaching or nearing a specific age.
knocking down
Striking something to make it fall.
knocking out
Rendering temporarily unable to function.
knocking over
Toppling something from its position.
knocking off
Ceasing work or stopping activity.
knocking about
Moving or traveling without purpose.
knocking around
Moving or traveling without purpose.
knocking back
Punching down risen bread dough.
knocking together
Assembling or hitting objects rapidly.
knocking shop
Brothel, establishment for paid sex.
Engine knocking
In spark-ignition internal combustion engines, knocking (also knock, detonation, spark knock, pinging or pinking) occurs when combustion of some of the air/fuel mixture in the cylinder does not result from propagation of the flame front ignited by the spark plug, but when one or more pockets of air/fuel mixture explode outside the envelope of the normal combustion front.
knocking copy
Advertising that criticizes competitor products.
knocking boots
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