·vt To blacken (leather, shoes, ·etc.) with blacking.
II. Blackball ·noun A ball of black color, ·esp. one used as a negative in voting;
— in this sense usually two words.
III. Blackball ·noun A composition for blacking shoes, boots, ·etc.; also, one for taking impressions of engraved work.
IV. Blackball ·vt 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.