To impregnate (to cause to become pregnant).
To sow (to disperse or plant seeds).
To fill with one's semen.
To impregnate, especially out of wedlock. See knocked up.
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.
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.
To put together, fabricate, or assemble, particularly if done hastily or temporarily. See also knock together.
To make even at the edges, or to shape into book form.