Black-market in a sentence as an adjective

Even in the limited areas where elephant populations are not highly endangered, there's still substantial controversy around any practice that allows the ivory market to legitimately revive itself, since it not only provides cover for black-market ivory, it also fuels the kind of demand that leads to increased poaching in places where elephants remain truly endangered. You should also know that what you saw on that video is the exception, not the rule.

Black-market definitions

adjective

distributed or sold illicitly; "the black economy pays no taxes"

See also: bootleg black contraband smuggled