Knock around (2) INFORMAL

If you knock around with someone, you spend time together because you're friends.

Knock back (1) INFORMAL

to take a drink, usually alcoholic

Knock back (2) INFORMAL

to reject someone or something or to refuse a request for something

knock down (1)

If something like a building or a wall is knocked down, it is destroyed on purpose.

knock down (2)

to hit someone with a vehicle

Knock off (1) INFORMAL

to stop work for the day

Knock off (2) INFORMAL

to steal something

Knock off (3) INFORMAL

to murder somebody

Knock off (4) INFORMAL

to reduce something, like a price or an amount

knock out (1)

If you are knocked out, you are hit so hard that you lose consciousness.

Knock out (2) INFORMAL

If you knock somebody out, you impress them very much with something you do, or something you make.

knock out (3)

If you knock somebody out of a competition, they cannot continue because you've defeated them.

knock over (1)

to hit somebody with a vehicle and injure or kill them

Knock over (2) INFORMAL

to rob something like a bank or a shop