blackball
verb
blackballed;
blackballing;
blackballs
Definition of blackball
(Entry 1 of 2)
1
: to vote against
especially
: to exclude from membership by casting a negative vote
blackball
nounDefinition of blackball (Entry 2 of 2)
1
: a small black ball for use as a negative vote in a ballot box
2
: an adverse vote especially against admitting someone to membership in an organization
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