The EDDAS are a collection of Old Norse poems and stories written in the 13th century. The term EDDAS is derived from the Old Norse word for 'great-grandmother' and is often used to refer to two collections of Icelandic literature, the Poetic Edda and the Prose Edda. The Poetic Edda is a collection of mythological and heroic poems, while the Prose Edda is a handbook of poetics for skaldic poetry. The ANAS in this crossword solution is an acronym for the Poetic Edda and Prose Edda, which together form the EDDAS.