knock back
drink something quickly
drink something quickly, often in one go
She knocked back her coffee and dashed for the train.
"knock" — same verb, different meanings
Phrasal verbs built on "knock" — same verb, but the particle changes the meaning. Pick the one that fits.
knock
back
knock backdrink something quickly, often in one goShe knocked back her coffee and dashed for the train.
down
knock downTo destroy a building or structure so that it falls to the ground.They knocked down the old cinema to build a new shopping center.
out
knock outTo hit someone so hard that they become unconscious, or to cause someone to become unconscious for a short time.The boxer knocked his opponent out in the second round.
up
knock upto make a meal quickly and without much effortI'll knock up something for dinner with whatever's in the fridge.
knock down
demolish (a building or structure)
To destroy a building or structure so that it falls to the ground.
They knocked down the old cinema to build a new shopping center.
knock out
make someone unconscious
To hit someone so hard that they become unconscious, or to cause someone to become unconscious for a short time.
The boxer knocked his opponent out in the second round.
knock up
make a meal quickly
to make a meal quickly and without much effort
I'll knock up something for dinner with whatever's in the fridge.