Etymon
pie-de-protoindoeuropean-h1-protoindoeuropean-deh1-protoitalic-de-latin-de-latin-de-protoindoeuropean-h2ep-protoindoeuropean-o-protoindoeuropean-h2epo-protoindoeuropean-h2po-protoindoeuropean-tekder
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.