A relatively small and specialist, yet profitable, market.

(business) A marketing strategy wherein advertisers associate themselves with, and therefore capitalize on, a particular event without paying any sponsorship fee.

Traded on the black market. / Contraband, bootleg or smuggled.

(intransitive) To participate in a black market. / (transitive) To sell in a black market.

trade that is in violation of restrictions, rationing, or price controls / the people who engage in such trade (considered as a group), or that sector of the economy

A town that has a traditional right to hold a regular market.

An outdoor market selling inexpensive antiques, curios etc.

A market for the trading of company stock. / (rare) A cattle market.

(idiomatic, business, finance) To monopolize a resource or commodity, as with the intent of driving up prices.

A specialized form of marketing where an advertiser seeks to advertise or sell products or services through an affiliate network.