Cormac's Glossary (1868) - Paperbackby Cormac (Author), John O'Donovan (Translator), Whitley Stokes (Editor) Cormac's Glossary is a book written by Cormac, a bishop and scholar from Ireland in the 9th century. The book is a collection of definitions and explanations of words and concepts from the Irish language, particularly those used in literature and poetry. The glossary covers a wide range of topics, including mythology, history, law, and religion. The book was originally written in