— blackballer , n.
/blak"bawl'/ , v.t.
1. to vote against (a candidate, applicant, etc.).
2. to exclude socially; ostracize: The whole town blackballed them.
3. to reject (a candidate) by placing a blackball in the ballot box.
n.
4. a negative vote, esp. in deciding on an applicant or candidate.
5. a black ball placed in a ballot box signifying a negative vote.
[ 1760-70; BLACK + BALL 1 ]
Syn. 2. boycott, ban, debar, snub, cut.