[noun] [C] - the writer of a book, article, play, etc.The copy of the novel I bought was signed by the author.Barry Black is the author of two books on French history.(formal) Author can also be used to refer to a person who begins or creates something.She's the author of the company's recent success/of all our troubles.
AUTHOR
Meaning of AUTHOR in English
Cambridge English vocab. Кембриджский английский словарь. 2012