Definition of "knock up" []

• Make pregnant (verb)

WordNet. Princeton University. 2010.

• "Being loth to knock up the hotel people at so late an hour — for you must understand, sir, that we did not get to Slepe Rock until after midnight — we essayed the garage attached to, and/or erected upon, the yard where the lorries and motor coaches pull in during the daytime.’"
• "Class Kenneth Cordell sneaked in through the window, not once, but enough times to make damn sure and knock up one Iris Ann"