Definition of blackball

• n. - A composition for blacking shoes, boots, etc.; also, one for taking impressions of engraved work.
• n. - A ball of black color, esp. one used as a negative in voting; -- in this sense usually two words.
• v. t. - 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.
• v. t. - To blacken (leather, shoes, etc.) with blacking.
• n. - A composition for blacking shoes, boots, etc.; also, one for taking impressions of engraved work.
• n. - A ball of black color, esp. one used as a negative in voting; -- in this sense usually two words.
• v. t. - 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.
• v. t. - To blacken (leather, shoes, etc.) with blacking.