An outdoor market selling inexpensive antiques, curios etc.

(Britain, dated) someone who was opposed to Britain joining the "Common Market" (European Union)

(marketing) The systematic collection and evaluation of data regarding customers' preferences for actual and potential products and services.

(idiomatic) something which is overabundant at the moment and thus not in demand.

A market where meat is sold. / (colloquial, idiomatic) A place where one goes for a casual sexual encounter, such as a bar (establishment) or night club.

(business) The buying and selling of goods through distribution channels other than those authorized or intended by the manufacturer or producer.

Any market in which carbon emissions trading takes place.

(finance) A market for trading short-term debt instruments, such as treasury bills, commercial paper, bankers' acceptances, and certificates of deposit.

drug on the market

Someone selling black market goods or trading on the black market.