on the point of doing sth meaning

[American slang]
Fig. ready to start doing something.
  I was just on the point of going out the door.
  We were almost at the point of buying a new car.

• at the point of doing sth:    [American slang]Go ...
• make a point of doing sth:    [American slang]Fi ...
• at the point of doing something:    [American idiom]re ...