black·ball /ˈblækˌbɔl/
  反對票(vt.)投票反對,排斥
  Black·ball n.
  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·ball, v. 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.
  ◄ ►
  blackball
       n : the act of excluding someone by a negative vote or veto
           [syn: barring]
       v 1: expel from a community or group [syn: banish, ban, ostracize,
             ostracise, shun, cast out]
       2: vote against; refuse to endorse; refuse to assent; "The
          President vetoed the bill" [syn: veto, negative]