Definition of blackball in English:

blackball

Syllabification: black·ball
Pronunciation: /ˈblakˌbôl
 
/

verb

[with object]
Reject (someone, usually a candidate applying to become a member of a private club), typically by means of a secret ballot: her husband was blackballed when he tried to join the country club
More example sentences
  • After all, the intellectual loner who sneers at the affairs of lesser men hardly tallies with the man whose membership application for the club was recently blackballed by four members.
  • He was almost blackballed from the Alpine Club and on one occasion even assaulted.
  • In theory at least, any one of its 148 members could blackball an agreement.
Synonyms
reject, debar, bar, ban, vote against, blacklist, exclude, shut out; ostracize, expel

Origin

late 18th century: from the practice of registering an adverse vote by placing a black ball in a ballot box.

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