An open area in a town housing a public market. / The space, actual or metaphorical, in which a market operates. / (by extension) The world of commerce and trade.

The finding and exploitation of niche markets.

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.

A felt-tipped pen, a marker pen. / A scorekeeper, especially one who tallies billiard scores. / (paintball) A device that fires a paintball. / A real or virtual objective, something to be aimed for.

To mark or write on (something) using a marker

(intransitive) To charge an exorbitant price for a service or product so that no one will purchase it. / (transitive) To force competition out of business by offering lower or discount prices.

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