a mark or emblem on the spine or title page of a book, identifying the printer or publisher of the book;
e.g. The spine of the book had its title and author, along with a colophon, embossed in gold.
(noun)
(historical) a statement provided at the end of a manuscript or book that gives information about the book's production, such as its authorship and printing;
e.g. The book had a brief colophon describing the details of the font in which it was printed.