1.
a door, usually in a large building, consisting of four panels that intersect at right angles and turn on a central pivot
2.
any system in which people frequently enter and leave, e.g. a corporation that repeatedly hires and fires staff or a criminal justice system that returns offenders to society
3.
a set of doors that spin around a central post
4.
a place or situation in which the people stay for a short time only, with the result that people are often arriving and leaving
1.
a door, usually in a large building, consisting of four panels that intersect at right angles and turn on a central pivot
2.
any system in which people frequently enter and leave, e.g. a corporation that repeatedly hires and fires staff or a criminal justice system that returns offenders to society
3.
a set of doors that spin around a central post
4.
a place or situation in which the people stay for a short time only, with the result that people are often arriving and leaving