Etymon
pie-terh2-protoindoeuropean-t-protoindoeuropean-terh2t-protoindoeuropean-onts-protoindoeuropean-trh2onts-protoindoeuropean-trh2nts-protoitalic-trans-protoitalic-trans-latin-transbor
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.