Definition of "blackballing" [blackballing]

• Present participle of blackball. (verb)

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• "Showbiz alexhammer Chris Brown kills Twitter account after claim of album 'blackballing' - CNN. com michaeldjjohnson P. Diddy: 'I was worst dealer in history'"
• "This bizarre 'blackballing' took an amusing turn this week."
• "And amid the crossfire of charges and countercharges - Jellison accuses the government of "blackballing" her at independent DNA labs; federal officials acknowledge that many of those labs are under federal contract, and thus have conflicts of interest-the military is standing by its findings."