That's layman's terms for the angle the steering stem/column or fork makes from a vertical line 90 degrees from the ground.
I like the rake that car has. The front is an inch lower then the rear. Perfect on that car.
An example of using the more technical definition of the term:
The rake on that frame is 30 degrees.
Mr. Trebek: This long-handled gardening tool can also mean an immoral pleasure seeker. Ken.
Ken Jennings: What's a hoe?
Mr. Trebek: No.
Other contestant: What's a rake?
Mr. Trebek: A rake is right.
There's a series of paintings called "the Rake's Progress", which shows a young man's descent into depravity.
Person Two: He's such a rake.