Etymon
pie-ne-protoindoeuropean-n-protoitalic-n-latin-in-protoindoeuropean-h2eg-protoindoeuropean-eti-protoindoeuropean-h2egeti-protoitalic-ago-latin-ago-protoindoeuropean-wos-protoindoeuropean-ihwosder
A dedicated page for this root is on the way — it will gather every word descended from it, sibling forms across daughter languages, and a branching map of the family tree.