IPA: /ˈblækˌbɔːl/
KK: /ˈblækˌbɔl/
A vote that prevents someone from being accepted into a group or organization, often represented by a small black ball used in voting.
The committee decided to blackball the applicant due to his previous behavior.
To exclude someone from a group or organization, often by voting against them or refusing to allow them to participate.
After the scandal, many members decided to blackball him from the club.
Past: blackballed
Past Participle: blackballed
Blackball is formed from "black" (from Old English "blæc", meaning dark or without light) and "ball" (from Old French "balle", meaning a round object used in games). The term originally referred to the practice of voting against someone by placing a black ball in a ballot box, thus excluding them from a group or decision.
Think of the color 'black' representing exclusion and 'ball' as a voting object — that's how 'blackball' means to vote against someone.