Ancrene Wisse and Hali Meiðhad

Ancrene Wisse and Hali Meiðhad is a 1929 essay by J.R.R. Tolkien on the 13th century early Middle English treatise Ancrene Wisse "The Anchoresses' Rule", and on the tract on virginity Hali Meiðhad "Holy Maidenhood". In the essay, which has been called "the most perfect though not the best-known of his [Tolkien's] academic pieces", he coined the term "AB language".