1 to hit

2 to strike

3 to tap

4 to rap

5 to knock

6 to rip sb off

7 to overcharge

1 to knock on a door

1 to think over

1 to come to a decision

2 to fix on (a date etc)

3 to determine

4 to finalize

5 to nail down (a deal etc)

1 to beat sb

2 to beat (a drum)

1 extortion and blackmail (idiom)

1 to make doubly sure (idiom)

1 lit. a brick as a door knocker (idiom); fig. a temporary expedient

2 to use sb as a stepping stone to fortune

1 to make insinuations

2 to take an indirect approach (in making inquiries) (idiom)

1 to do things in bits and pieces (idiom); piecemeal work