Added 9 October 2026 blackball /ˈblækbɔːl/ noun Categories: ActionsObscure Words noun ! Definition from WordNet 3.1, Princeton University. Pronunciation from Wiktionary, via Kaikki.org. More about blackball at Wordnik → Where our words come from → The act of excluding someone by a negative vote or veto. verb Expel from a community or group. Vote against; refuse to endorse; refuse to assent. The President vetoed the bill Origin From black + ball. From Wiktionary, via Kaikki.org (CC BY-SA) Related Words: vetoostracizeshunbanishnegativebanbarringblackrejection Back to today's word