Added 9 October 2026 treetop /ˈtɹiˌtɑp/ noun Categories: PlantsRare Words noun ! Definition from WordNet 3.1, Princeton University. Pronunciation from Wiktionary, via Kaikki.org. More about treetop at Wordnik → Where our words come from → The upper branches and leaves of a tree or other plant. Origin From tree + top. From Wiktionary, via Kaikki.org (CC BY-SA) Related Words: capitulumcrownforetopmastsupercanopytoppevertextopperspirechiefmountaintop Back to today's word