knock up

verb

1. informal.
   Alsoknock together to assemble quickly; improvise

   to knock up a set of shelves

2. informal.
   to waken; rouse

   to knock someone up early

3. slang.
   to make pregnant
4. informal.
   to exhaust

   the heavy work knocked him up

5. cricket to score (runs)
6. intr tennis squash badminton to practise or hit the ball about informally, esp before a match

noun

1. a practice session at tennis, squash, or a similar game