blackball /ˈblækˌbɑːl/ verb blackballs; blackballed; blackballing
blackballs; blackballed; blackballing
Learner's definition of BLACKBALL
[+ object]
: to prevent (someone) from joining a group, club, etc., by voting against him or her投反对票（以阻止某人加入组织、俱乐部等） —
often used as (be) blackballed常用作(be) blackballed