knock up = make quickly
- When we got back home we were very hungry and we knocked up some pasta.
- I can knock up a pizza if you want.
- We could knock up an omelette and salad.
- The children knocked up a little house under the tree using boxes.
- He knocked up a website with educational material for kids.
- There were no more beds, so we knocked up two more beds with two carpets and a mattress.
- I knocked up a list of some things we are going to need for the party.