From The Collaborative International Dictionary of English v.0.48:
Blacklist \Black"list`\, v. t.
To put in a black list as deserving of suspicion, censure, or
punishment; esp. to put in a list of persons stigmatized as
insolvent or untrustworthy, -- as tradesmen and employers do
for mutual protection; as, to blacklist a workman who has
been discharged. See Black list, under Black, a.
[1913 Webster]
If you blacklist us, we will boycott you. --John
Swinton.
[1913 Webster] black lung