tritavunculus, triavunculus
[τρίτος+avunculus, cf. CL tritavus], great-great-great-great-uncle on the mother's side.b(~us magnus) great-great-great-great-great-uncle on the mother's side.de matre ‥ tritavunculus et trimaterteraRob. Bridl.Dial.160. btriavunculus magnus ‥ ex parte matrisBractonf. 68b (= Fleta375).