To declare prohibited; forbid.
To import illegally, as prohibited goods; smuggle.
Prohibited or excluded by proclamation, law, or treaty.
noun.
Illegal or prohibited traffic.
noun.
Anything by law prohibited to be imported or exported.
noun.
In the United States, during the civil war, a negro slave, especially an escaped or a captured slave: so called from a decision of General B. F. Butler, in 1861, that slaves coming into his lines or captured were contraband of war, and so subject to confiscation.