(UK) A prison with minimal restrictions on the prisoners.

Being present during a public court session.

plural of opening night

present participle of open-wash

plural of open space

An open-air area, such as a park or public garden with no (or very few) buildings, often in an urban area and designated by a local authority or government as such.

The part of the road system that is away from urban and suburban areas and on which large distances can be travelled without needing to frequently slow for traffic or intersections.

Or or relating to travelling on the open road.

porous / (philosophy) evading a precise or holistic definition / (law) subject to constant attempts at ascribing a meaning, due to a legal rule's vagueness or multiple interpretations

(US politics) Synonym of brokered convention