Abavunculus

Lat. In the civil law. A great-great-grandmother's brother, (abaviœ frater.) Inst. 3, 6, 6; Dig. 38, 10, 3. Called avunculus maximus. Id. 38,10, 10, 17. Called by Bracton and Fleta abavunculus magnus. Bract, fol. 68b; Fleta, lib. 6, c. 2, § 19.