1. strike to the ground
English word "knock down"(strike to the ground) occurs in sets:
sem 2 news items 3-52. hit sb with a vehicle and injure or kill them
English word "knock down"(hit sb with a vehicle and injure or kill them) occurs in sets:
PET for Schools - phrasals3. destroy a building or a part of building
English word "knock down"(destroy a building or a part of building) occurs in sets:
Phrasal verbs4. run down
The battery has run down.
hit and injure sb with a vehicle/My dog was run down by a bus.
My father worked very hard last month and now he is run down.
She got run down outside school.
I’ll just run down the list and see if we’ve forgotten anything.
She feels run down after working so hard recently.