Although the early dictionaries, like Pali Text Society’s Pali-English Dictionary and A Critical Pāli Dictionary, did utilize the Jātaka word definitions considerably, up and till now no one has translated the word commentaries into English in full. It is this gap that the present work seeks to fill with a new translation of the 500 verses of the first three books, together with their explanations, which takes us up to Jātaka 300.