1. to stop working and go out 2. to reduce price 3. to make 4. to kill 5. to steal
1. The shop was closed, as the staff knocked off for lunch. 2. I don't like to knock off the price, I feel awkward. 3. The bakery knocks off tons of bread weekly. 4. The lawyer collected all the necessary documents and proved that his client didn't knock Mr.Green off. 5. The criminals knocked the gold off and escaped.