open

noun

1.
a clear or unobstructed space or expanse of land or water
gaping umsight clear
Derived from:
open
2.
where the air is unconfined
open air outdoors out-of-doors
Derived from:
open
3.
a tournament in which both professionals and amateurs may play
Derived from:
open
4.
information that has become public
surface
Derived from:
open