knock somebody/something down phrasal verb ( see also ↑ knock )
1 . HIT/PUSH SOMEBODY knock somebody ↔ down to hit or push someone so that they fall to the ground:
Something hit him from behind and knocked him down.
⇨ ↑ knockdown 2
2 . HIT SOMEBODY WITH A VEHICLE knock somebody ↔ down to hit someone with a vehicle while you are driving, so that they are hurt or killed:
A child was in hospital last night after being knocked down by a car.
3 . DESTROY knock something ↔ down to destroy a building or part of a building SYN demolish :
They want to knock the house down and rebuild it.
4 . REDUCE PRICE knock something ↔ down informal to reduce the price of something by a large amount:
The new stove we bought was knocked down from $800 to $550.
⇨ ↑ knockdown 1
5 . ASK SOMEBODY TO REDUCE PRICE knock somebody down to something informal to persuade someone to reduce the price of something they are selling you:
She’s asking for £150 but I’ll try to knock her down to £100.