pagophagic, pagophagous, adj
An abnormal condition characterized by a compulsive and repetitive craving to eat enormous quantities of ice. It is associated with a lack of the nutrient iron. Common in pregnancy. A form of pica (an abnormal desire to eat substances not normally eaten)
Etymology: Gk, pagos, frost, phagein, to eat
I'm so grateful that the form of pica I experienced during my pregnancy was pagophagia or the phrase "Eat dirt" would have taken on a whole new meaning.