…allowing access, passage, or a view through an empty space; not closed or blocked up…
…a bar at a special function at which the drinks have been paid for by the host or are prepaid through an admission fee…
…a city declared to be unfortified and undefended and so, by international law, exempt from enemy attack…
…a day when members of the public may visit a place or institution to which they do not usually have access…
…denoting or relating to a trip in which an airline passenger flies in to one destination and returns from another…
…a session in a club during which anyone is welcome to sing or perform stand-up comedy…
…denoting a method of mining in which coal or ore is extracted at or from a level near the earth’s surface, rather than from underground workings…
…(of a building or floor plan) having large open areas with few or no internal dividing walls…
…(of an audiotape recorder) having reels of tape requiring individual threading, as distinct from a cassette…
…a system whereby employees in a place of work are not required to join a labor union…
…the side of the scrum on which the main line of the opponents' backs is ranged…
…(of a vehicle) not having a roof or having a folding or detachable roof…
…denoting a steelmaking process in which the charge is laid on a hearth in a shallow furnace and heated by burning gas…
…a letter, often critical, addressed to a particular person or group of people but intended for publication…
…an unrestricted market with free access by and competition of buyers and sellers…
…a system of financial trading in which dealers shout their bids and contracts aloud…
…a prison with the minimum of restrictions on prisoners' movements and activities…
…a period when restrictions on the hunting of certain types of wildlife are lifted…
…denoting software for which the original source code is made freely available and may be redistributed and modified…
…merchandise, especially china, silverware, and glassware, that is sold in sets and kept in stock so that customers can purchase or replace individual pieces…
…a system in which the components and protocols conform to standards independent of a particular supplier…
