(third-person singular simple present knocks up, present participle knocking up, simple past and past participle knocked up)
- (colloquial) To put together, fabricate, or assemble, particularly if done hastily or temporarily. See also knock together. [from 16th c.]
- I'll just knock up a quick demo for the sales presentation.
- (UK) To awaken (someone) as by knocking at the door; rouse; call; summon; also, to go door-to-door on election day to persuade a candidate's supporters to go to the polling station and vote. See also knocker up. [from 17th c.]
- (dated) To exhaust; wear out; weary; beat; tire out; to fatigue until unable to do more. [from 18th c.]
- (dated, intransitive) To become exhausted or worn out; to fail of strength; to become wearied, as with labor; to give out. [from 18th c.]
- (slang) To impregnate, especially out of wedlock. See knocked up. [from 19th c.]
- I guess his summer plans are shot now that he knocked his girlfriend up.
- (racket sports, intransitive) To gently hit the ball back and forth before a tennis match, as practice or warm-up, and to gauge the state of the playing surface, lighting, etc. See knock-up. [from 19th c.]
- Official Knock up: if the players knock up together a maximum of five minutes shall be permitted; if they knock up separately each player shall be permitted to knock up for a maximum of five minutes. The Tennis & Rackets Association - Tournament Rules