Definition of opens:
(adj) :
(usually not comparable) Physically unobstructed, uncovered, etc.
(adj) :
Able to have something pass through or along it.
(adj) :
Not covered, sealed, etc.; having an opening or aperture showing what is inside.
(adj) :
Not physically drawn together, folded or contracted.
(adj) :
Of a space, free of objects and obstructions.
(adj) :
(medicine) Resulting from an incision, puncture or any other process by which the skin no longer protects an internal part of the body.