what does theme mean in book specifically
Asker's rating. 1  Theme Of A Book Definition. Source(s): https://shrink.im/babyI. 2  The theme of a book means the meaning of the book or the life lesson that the book teaches. Basically the purpose of the book. 3  The theme of a book is the important life lesson that is being implied. It is something with a deeper meaning that is related to life.