What is 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 called?

blackball — 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. (Webster's 1913.)