Definify.com
Webster 1913 Edition
Blackball
Black′ballˊ
,Noun.
1.
A composition for blacking shoes, boots, etc.; also, one for taking impressions of engraved work.
2.
A ball of black color, esp. one used as a negative in voting; – in this sense usually two words.
Black′ballˊ
,Verb.
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.
He was
blackballed
at two clubs in succession. Thackeray.
2.
To blacken (leather, shoes, etc.) with blacking.