Definition of "blackballs" [blackballs]

• Plural form of blackball. (noun)
• Third-person singular simple present indicative form of blackball. (verb)

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• "I don't like exclusionary policies, membership selection committees, blackballs, vetoes, or all the other games clubs play in order to keep their membership "select.""
• "I don't like exclusionary policies, membership selection committees, blackballs, vetoes, or all the other games clubs play in order to keep their membership "select." 

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• "Randi Weingarten: wins top AFT job, successfully blackballs Klein without having to admit to it, and prevents DCTA from giving away the farm."