Etymon
pie-gel-latin-gelu-protoindoeuropean-h2-protoindoeuropean-eh2-protoindoeuropean-yeti-protoindoeuropean-eh2yeti-protoitalic-ao-latin-o-latin-gelo-protoindoeuropean-eh2-protoindoeuropean-tos-protoindoeuropean-eh2tos-protoitalic-atos-latin-atus-latin-ata-early-medieval-latin-gelata-old-french-geleebor
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.