What was the title of hurlers book that he wrote while imprisoned and what does it mean?

The book you're likely thinking of is "The Autobiography of Malcolm X". It was written by Malcolm X with the assistance of Alex Haley, while Malcolm X was imprisoned.

The title is straightforward and self-explanatory. It is an autobiography, a non-fiction account of Malcolm X's life written by himself.

It's important to note that "The Autobiography of Malcolm X" is a very influential book that has been praised for its honesty and its exploration of Malcolm X's transformation from a criminal to a prominent figure in the Black Muslim movement.