(law, international law) An international treaty (full title: Convention for the Unification of Certain Rules Relating to International Carriage by Air, Signed at Warsaw on 12 October 1929) signed in Warsaw in 1929, covering international air travel, including such topics as ticketing, cargo and liability.

(international law) An international treaty which defines the required treatment for prisoners of war by their captors.

(philately, historical) Any of the Indian feudal states which, during the time of the British Empire, used overprinted Indian stamps valid for postage outside the state.

A collection of rules followed by a set of names which allow users to deduce useful information, based on the names' character sequence and knowledge of the rules followed; such as Manhattan's East-West streets being called "Streets" and its North-South streets being called "Avenues".

(US, politics) A meeting of the major figures in a political party to outline a party platform, set party rules, select a nominee for president as well as rally supporters.

A belief or set of beliefs that is widely accepted, especially one which may be questionable on close examination.

plural of convention bump

plural of convention state

plural of conventional wisdom

plural of convention-goer