Blackball \Black"ball`\, v. t. [imp. & p. p. {Blackballed}; p.
pr. & vb. n. {Blackballing}.]
1. To vote against, by putting a black ball into a ballot
box; to reject or exclude, as by voting against with black
balls; to ostracize.
[1913 Webster]
He was blackballed at two clubs in succession.
--Thackeray.
[1913 Webster]
2. To blacken (leather, shoes, etc.) with blacking.
[1913 Webster]