black

"I don't want to fight; but you are a mean, dirty blackguard, or you wouldn't have treated a girl like that," replied Tommy, standing as stiff as a stake before the bully.

"Say that again, and I'll black your eye for you."

[…] he must catch, curry, and saddle his own horse; he must black his own brogans (for he will not be able to buy boots).

The plants were blacked by the Transport and General Workers' Union and a consumer boycott was organised; both activities contributed to what the union saw as a victory.