Wiktionary
vb. (present participle of knock up English)
Usage examples of "knocking up".
Caterers, who were knocking up a sea-food buffet, crept out of the kitchen wiping prawn juice on their aprons to have a gawp.
After that the ship leaped into the clear blue swells, knocking up sheets of spray with every slam into an oncoming wave.
However, by dint of beating about a little in the dark, and now and then knocking up a peaceable inhabitant to inquire the way, we at last came to something which there was no mistaking.
All he had to be cautious of was knocking up a girl, otherwise just take amid enjoy, take what you can while you can, no regrets and don't look back and after Labor Day he'd be hundreds of miles away.
Geis was busy knocking up a young dumb kid, his housekeeper's daughter, right in the same house, every night for weeks.
I shan't rest till I know this one, I warn you, for I cannot conceive what was in Dysart's head, unless he was just knocking up a lark, and that I know he was not.
It had been when I was knocking up and down the coast that year after I'd gotten out of high school.