Etymon
pie-ke-protoindoeuropean-kom-protoitalic-kom-protoitalic-kom-latin-con-protoindoeuropean-gel-latin-gelu-protoindoeuropean-h2-protoindoeuropean-eh2-protoindoeuropean-yeti-protoindoeuropean-eh2yeti-protoitalic-ao-latin-o-latin-gelo-latin-congeloder
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.