not closed; allowing (things, people) to go in, out, through; not enclosed, fenced in, barred or blocked
unfastened, unclosed
Cases of word usage
1) of a door slightly open (ajar)
2) (of meals) in the open air (alfresco)
3) a round building with rows of seats round an open space, used for sports and amusements (amphitheatre)
4) a small open vessel for traveling on water, especially the kind moved with oars (boat)
5) an open metal container for a coal fire (brazier)
6) the sound, action, or bringing the open hands together (clap)
7) an open space from which trees have been cleared in a forest (clearing)
8) a covered walk, usually on the sides of an open courtyard, with a wall on the outer side and columns or arches on the inner side (cloister)
9) a long narrow passage from which doors open into rooms (corridor)
10) a deep, open crack, especially in ice on a glacier (crevasse)